10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 10-Q

(Mark One)

xQUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2017

or

oTRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from  to

Commission File Number: 001-36373

TRINET GROUP, INC.

(Exact Name of Registrant as Specified in its Charter)

Delaware	95-3359658
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
1100 San Leandro Blvd., Suite 400, San Leandro, CA	94577
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code: (510) 352-5000

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x    No  o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer”, “smaller reporting company”, and “emerging growth company” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer	x	Accelerated filer	o
Non-accelerated filer	o (do not check if a smaller reporting company)	Smaller reporting company	o
Emerging growth company	o

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  Yes  o    No  o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  o    No  x

The number of shares of Registrant’s Common Stock outstanding as of October 24, 2017 was 69,485,274.

TRINET GROUP, INC.

Form 10-Q - Quarterly Report

For the Quarterly Period Ended September 30, 2017

TABLE OF CONTENTS

	Form 10-Q Cross Reference	Page
Unaudited Condensed Consolidated Financial Statements	Part I, Item 1.	21
Condensed Consolidated Balance Sheets		21
Condensed Consolidated Statements of Income and Comprehensive Income		22
Condensed Consolidated Statements of Cash Flows		23
Notes to Condensed Consolidated Financial Statements		24
Management’s Discussion and Analysis of Financial Condition and Results of Operations	Part I, Item 2.	4
Quantitative and Qualitative Disclosures About Market Risk	Part I, Item 3.	20
Controls and Procedures	Part I, Item 4.	20
Legal Proceedings	Part II, Item 1.	35
Risk Factors	Part II, Item 1A.	35
Unregistered Sales of Equity Securities and Use of Proceeds	Part II, Item 2.	35
Defaults Upon Senior Securities	Part II, Item 3.	35
Mine Safety Disclosures	Part II, Item 4.	35
Other Information	Part II, Item 5.	35
Exhibits	Part II, Item 6.	35

FORWARD LOOKING STATEMENTS AND OTHER FINANCIAL INFORMATION

Cautionary Note Regarding Forward-Looking Statements and Other Financial Information

For purposes of this report the terms “TriNet," "the Company," “we,” “us” and “our" refer to TriNet Group, Inc., and its consolidated subsidiaries. This report contains statements that are not historical in nature, are predictive in nature, or that depend upon or refer to future events or conditions or otherwise contain forward-looking statements within the meaning of Section 21 of the Securities Exchange Act of 1934, as amended, and the Private Securities Litigation Reform Act of 1995. Forward-looking statements are often identified by the use of words such as, but not limited to, “anticipate,” “believe,” “can,” “continue,” “could,” “estimate,” “expect,” “intend,” “may,” “plan,” “project,” “seek,” “should,” “strategy,” “target,” “will,” “would” and similar expressions or variations intended to identify forward-looking statements.

Forward-looking statements are not guarantees of future performance, but are based on management’s expectations as of the date of this report and assumptions that are inherently subject to uncertainties, risks and changes in circumstances that are difficult to predict. Forward-looking statements involve known and unknown risks, uncertainties and other factors that may cause actual results, performance or achievements to be materially different from our current expectations and any past results, performance or achievements. Important factors that could cause actual results to differ materially from those expressed or implied by these forward-looking statements include, but are not limited to, those discussed in our Form 10-K for the year ended December 31,2016(2016 Form 10-K) and our Form 10-Q for the quarters ended March 31, 2017 and June 30, 2017. The information provided in this Form 10-Q is based upon the facts and circumstances known at this time, and any forward-looking statements made by us in this Form 10-Q speak only as of the date on which they are made. All information provided in this report is as of the date of this report and we undertake no duty to update this information except as required by law.

Our Management's Discussion & Analysis of Financial Condition and Results of Operations (MD&A) includes references to our performance measures presented in conformity with accounting principles generally accepted in the United States of America (GAAP) and other non-GAAP financial measures that we use to manage our business, make planning decisions, allocate resources and as performance measures in our executive compensation plan. Refer to the Non-GAAP Financial Measures in our Key Financial and Operating Metrics section within our MD&A for definitions and reconciliations from GAAP measures.

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MANAGEMENT'S DISCUSSION AND ANALYSIS

Management’s Discussion and Analysis of Financial Condition and Results of Operations

Executive Summary

Overview

We are a leading provider of human resources (HR) solutions for small to midsize businesses (SMBs). Under our co-employment model, we assume certain of the responsibilities of being an employer and help our clients mitigate employer-related risks and manage many of the complex and burdensome administrative and compliance responsibilities associated with employment.

We deliver a comprehensive suite of products and services, which allow our clients and their worksite employees (WSEs) to administer and manage HR-related functions, including compensation and benefits, payroll and other transactional HR needs, employee data, and health insurance and workers' compensation programs, using our technology platform and HR expertise.

We operate in one reportable segment. Less than 1% of revenue is generated outside of the U.S.

Technology Platform

Our technology platform provides our clients and WSEs online and mobile tools to store, view, and manage core HR information and administer a variety of HR transactions, such as payroll processing, tax administration, employee onboarding and termination, compensation reporting, expense management, and benefits enrollment and administration.

HR Expertise

We use the collective insights and experience of our teams of HR, benefits, risk management, and compliance professionals to help clients manage many of the administrative, regulatory, and practical risks associated with their responsibilities as employers. Our teams provide HR expertise to assist our clients in running their business by providing a variety of HR services, including employee onboarding and terminations, benefits enrollment and support, employment practices risk management and administration, talent management, recruiting and training, and performance management. Under our vertical strategy, we seek to design our product and service offerings for specific industries by identifying common needs and leveraging scale and shared experience to provide more efficient and relevant offerings.

Benefits

We offer our WSEs access to a broad range of TriNet-sponsored benefit and insurance programs that many of our clients may be unable to obtain for their WSEs on their own and that are compliant with state, local, and federal regulations. Our benefit and insurance service offerings include plan design and administration, enrollment management, and WSE and client communications relating to our sponsored benefits and insurance programs.

We pay premiums to third-party insurance carriers for WSE insurance benefits and reimburse the insurance carriers and third-party administrators for claims payments made on our behalf within our insurance deductible layer, where applicable.

Compliance

Our products and services are designed to help our clients comply with local, state, and federal employment and benefit laws. We monitor employer-related legal and regulatory developments and assist clients in complying with changing regulations and requirements at all levels, from changes in local minimum wage and family leave ordinances to sweeping reforms such as the Patient Protection and Affordable Care Act (ACA). Often these changes are staggered and require additional guidance from a variety of local, state or federal agencies, making compliance a continuous challenge. Each component of our HR solutions is designed with compliance in mind, whether it is payroll processing

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MANAGEMENT'S DISCUSSION AND ANALYSIS

and tax administration, HR services focused on creating a compliant workplace, or offering ACA-compliant benefit plans.

Significant Developments in 2017

Our consolidated results for the first nine months of 2017 reflect our continued progress with vertical products and insurance service offerings combined with slower growth in insurance costs as a result of favorable experience in our health programs and cost management with our insurance providers.

We began 2017 with significant operational initiatives to improve our products and platform for our clients. During the first nine months of 2017, we provided our users with improved online and mobile productivity tools and upgraded our architecture allowing our platform to integrate more effectively with third party products. In July 2017, we launched and started onboarding clients to TriNet Main Street, our vertical offering designed for clients in the hospitality, retail and manufacturing industries.

Over the last year, we have benefited from our scale as we decreased administrative costs associated with our insurance offerings and are bringing forward this benefit to our clients. In October 2017, we launched the 2017 Fee Credit initiative designed to reward a portion of our existing clients. This incentive will be based on our full-year 2017 results and we expect our clients to receive the incentives under the program in the first quarter of 2018. The credit will be treated as a reduction of revenues.

Additionally in October 2017, we changed the contract terms with one of our health insurers. Previously we contracted with this carrier on a fully insured, guaranteed-cost basis; under this new arrangement we will be responsible for reimbursement of claim payments within our deductible layer.

We experienced flat Average WSE growth compared to the first nine months of 2016 as we continued our migration from legacy platforms to our common TriNet platform and we moderated our new customer growth as we expanded the functionality of TriNet Main Street.

Our other operating expenses reflect our continued focus on developing new vertical products and platform integrations, and additional costs associated with our internal control remediation efforts.

Performance Highlights

Q3 2017

During the third quarter of 2017, we:

• served approximately 15,000 clients and co-employed Average WSEs of 324,000, a 2%decrease in Average WSEs compared to the same period in 2016, and

• processed approximately $8.1 billion in payroll and payroll tax payments for our clients, an increase of 5% over the same period in 2016.

Our financial performance for the third quarter of 2017, compared to the same period in 2016, included:

• Total revenues increased 6% to $819.3 million, due to increased insurance service revenues from higher participation in our health plans combined with an equal increase in health insurance service fees per plan participant, while Net Service Revenues increased 28% to $205.9 million primarily due to an increase in insurance service revenues noted above.

• Operating income increased 117%to $62.8 million primarily due to improvement in our Net Service Revenues, partially offset by an increase in other operating expenses incurred to support our initiatives.

• Net income increased 194%to $42.8 million, or $0.60 per diluted share, Adjusted Net Income increased94% to $40.3 million and Adjusted EBITDA increased77% to $80.3 million primarily due to increased operating income as described above.

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MANAGEMENT'S DISCUSSION AND ANALYSIS

YTD 2017

During the first nine months of 2017, we:

• co-employed Average WSEs of 325,000, consistent with the same period in 2016,

• processed approximately $25.8 billion in payroll and payroll tax payments for our clients, an increase of 4% over the same period in 2016, and

• increased Cash and cash equivalents $79.5 million, or 43%, to $263.5 million.

Our financial performance for the first nine months of 2017, compared to the same period in 2016, included:

• Total revenues increased 8% to $2.4 billion, while Net Service Revenues increased 28% to $605.9 million attributable primarily to increased participation in our health plans combined with an increase in health insurance fees per plan participant. Net Service Revenues also benefited from slower growth in insurance claims costs and reduced administrative costs.

• Operating income increased 108%to $169.1 million primarily due to increases in Net Service Revenues, partially offset by an increase in other operating expenses to support our initiatives.

• Net income increased 190%to $111.5 million, or $1.57 per diluted share, Adjusted Net Income increased82% to $108.6 million and Adjusted EBITDA increased66% to $216.0 million primarily due to increased operating income as described above.

• Cash provided by operating activities increased 97% to $159.0 million primarily as a result of increased operating income as described above, decreased payments of our tax liabilities, and a decrease in payments of collateral to our workers' compensation insurance carriers.

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MANAGEMENT'S DISCUSSION AND ANALYSIS

Key Financial and Operating Metrics

The following key financial and operating metrics should be read in conjunction with our condensed consolidated financial statements and related notes included in this Form 10-Q.

	Three Months Ended September 30,				Nine Months Ended September 30,				Percent Change
(in thousands, except per share and operating metrics data)	2017		2016		2017		2016		Q3 2017 vs. 2016			YTD 2017 vs. 2016
Income Statement Data:
Total revenues	$	819,293	$	770,457	$	2,427,444	$	2,249,242	6		%	8	%
Operating income	62,759		28,972		169,081		81,241		117			108
Net income	42,836		14,581		111,524		38,440		194			190
Diluted net income per share of common stock	0.60		0.20		1.57		0.53		200			196
Non-GAAP measures (1):
Net Service Revenues (1)	205,896		161,035		605,870		473,458		28			28
Net Insurance Service Revenues (1)	93,366		50,542		264,577		140,969		85			88
Adjusted EBITDA (1)	80,283		45,399		215,998		130,154		77			66
Adjusted Net Income (1)	40,297		20,800		108,565		59,798		94			82
Operating Metrics:
Total WSEs payroll and payroll taxes processed (in millions)	$	8,061	$	7,703	$	25,835	$	24,916	5		%	4	%
Average WSEs	324,043		331,652		325,347		324,652		(2	)		—

(1) Refer to Non-GAAP Financial Measures section below for definitions and reconciliations from GAAP measures.

	Nine Months Ended September 30,						Percent
(in thousands, except operating metrics data)	2017			2016			Change
Operating Metrics:
Total WSEs at period end	325,138			333,778			(3	)	%
Cash Flow Data:
Net cash provided by operating activities	$	158,951		$	80,699		97
Net cash used in investing activities	(14,763		)	(17,411		)	(15	)
Net cash used in financing activities	(65,063		)	(68,998		)	(6	)

(in thousands)	September 30, 2017		December 31, 2016		Percent Change
Balance Sheet Data:
Cash and cash equivalents	$	263,527	$	184,004	43		%
Working capital	186,842		156,771		19
Total assets	1,836,925		2,095,143		(12	)
Notes and capital leases payable	431,690		459,054		(6	)
Total liabilities	1,705,066		2,060,553		(17	)
Total stockholders’ equity	131,859		34,590		281

Non-GAAP Financial Measures

In addition to financial measures presented in accordance with GAAP, we monitor other non-GAAP financial measures that we use to manage our business, make planning decisions, allocate resources and as performance measures in our executive compensation plan. These key financial measures provide an additional view of our operational performance over the long-term and provide useful information that we use in order to maintain and grow our business.

The presentation of these non-GAAP financial measures is used to enhance the understanding of certain aspects of our financial performance. It is not meant to be considered in isolation, superior to, or as a substitute for the directly comparable financial measures prepared in accordance with GAAP.

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MANAGEMENT'S DISCUSSION AND ANALYSIS

Non-GAAP Measure	Definition	How We Use The Measure
Net Service Revenues	• Sum of professional service revenues and Net Insurance Service Revenues, or total revenues less insurance costs.	• Provides a comparable basis of revenues on a net basis. Professional service revenues are represented net of client payroll costs whereas insurance service revenues are presented gross of insurance costs for financial reporting purposes. • Acts as the basis to allocate resources to different functions and evaluates the effectiveness of our business strategies by each business function. • Provides a measure, among others, used in the determination of incentive compensation for management.
Net Insurance Service Revenues	• Insurance revenues less insurance costs.	• Is a component of Net Service Revenues. • Provides a comparable basis of revenues on a net basis. Professional service revenues are represented net of client payroll costs whereas insurance service revenues are presented gross of insurance costs for financial reporting purposes. Promotes an understanding of our insurance services business by evaluating insurance service revenues net of our WSE related costs which are substantially pass-through for the benefit of our WSEs. Under GAAP, insurance service revenues and costs are recorded gross as we have latitude in establishing the price, service and supplier specifications.
Adjusted EBITDA	• Net income, excluding the effects of: - income tax provision, - interest expense, - depreciation, - amortization of intangible assets, and - stock-based compensation expense.	• Provides period-to-period comparisons on a consistent basis and an understanding as to how our management evaluates the effectiveness of our business strategies by excluding certain non-cash charges such as depreciation and amortization, and stock-based compensation recognized based on the estimated fair values. We believe these charges are not directly resulting from our core operations or indicative of our ongoing operations. • Enhances comparisons to prior periods and, accordingly, facilitates the development of future projections and earnings growth prospects. • Provides a measure, among others, used in the determination of incentive compensation for management.
Adjusted Net Income	• Net income, excluding the effects of: - effective income tax rate (1), - stock-based compensation, - amortization of intangible assets, - non-cash interest expense (2), and - the income tax effect (at our effective tax rate (1)) of these pre-tax adjustments.	• Provides information to our stockholders and board of directors to understand how our management evaluates our business, to monitor and evaluate our operating results, and analyze profitability of our ongoing operations and trends on a consistent basis by excluding certain non-cash charges.

(1) We have adjusted the non-GAAP effective tax rate to 40.5% for 2017 from 42.5% for 2016 due to a decrease in state income taxes from an increase in excludable income for state income tax purposes. These non-GAAP effective tax rates exclude the income tax impact from stock-based compensation and changes in uncertain tax positions.

(2) Non-cash interest expense represents amortization and write-off of our debt issuance costs.

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MANAGEMENT'S DISCUSSION AND ANALYSIS

Reconciliation of GAAP to Non-GAAP Measures

The table below presents a reconciliation of Total revenues to Net Service Revenues:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2017		2016		2017		2016
Total revenues	$	819,293	$	770,457	$	2,427,444	$	2,249,242
Less: Insurance costs	613,397		609,422		1,821,574		1,775,784
Net Service Revenues	$	205,896	$	161,035	$	605,870	$	473,458

The table below presents a reconciliation of Insurance service revenues to Net Insurance Service Revenues:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2017		2016		2017		2016
Insurance service revenues	$	706,763	$	659,964	$	2,086,151	$	1,916,753
Less: Insurance costs	613,397		609,422		1,821,574		1,775,784
Net Insurance Service Revenues	$	93,366	$	50,542	$	264,577	$	140,969

The table below presents a reconciliation of Net income to Adjusted EBITDA:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2017		2016		2017		2016
Net income	$	42,836	$	14,581	$	111,524	$	38,440
Provision for income taxes	15,268		9,107		43,719		27,558
Stock-based compensation	7,700		6,264		21,406		20,169
Interest expense and bank fees	5,425		5,597		15,030		15,677
Depreciation	7,754		5,188		20,353		13,663
Amortization of intangible assets	1,300		4,662		3,966		14,647
Adjusted EBITDA	$	80,283	$	45,399	$	215,998	$	130,154

The table below presents a reconciliation of Net income to Adjusted Net Income:

	Three Months Ended September 30,						Nine Months Ended September 30,
(in thousands)	2017			2016			2017			2016
Net income	$	42,836		$	14,581		$	111,524		$	38,440
Effective income tax rate adjustment	(8,264		)	(960		)	(19,154		)	(491		)
Stock-based compensation	7,700			6,264			21,406			20,169
Amortization of intangible assets	1,300			4,662			3,966			14,647
Non-cash interest expense	622			1,559			1,846			3,183
Income tax impact of pre-tax adjustments	(3,897		)	(5,306		)	(11,023		)	(16,150		)
Adjusted Net Income	$	40,297		$	20,800		$	108,565		$	59,798

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MANAGEMENT'S DISCUSSION AND ANALYSIS

Results of Operations

Revenues and Income

Q3 2017 - Q3 2016 Commentary

Total revenues were $819.3 million for the third quarter of 2017, a 6%increase compared to the same period in 2016.

• Insurance service revenues grew 7% over the same quarter in 2016 to $706.8 million.

• Professional service revenues increased2% over the same quarter in 2016 to $112.5 million.

Net Service Revenues were $205.9 million for the third quarter of 2017, representing a 28%increase from the same period in 2016. This was driven by the increase in Net Insurance Service Revenues, which grew 85% over the same period in 2016 due to increased participation in our health plans combined with an equal increase in health insurance service fees per plan participant. Insurance service revenues per Average WSE increased10% while insurance costs per Average WSE increased3%.

Operating income was $62.8 million, up 117% from the third quarter of 2016, primarily due to improvement in our insurance service revenues as noted above, partially offset by a 10%increase in other operating expenses to support our initiatives and additional costs associated with our internal control remediation efforts. Refer to the Other Operating Expenses section in this Results of Operations for further detail.

YTD 2017 - YTD 2016 Commentary

Total revenues were $2.4 billion for the first nine months of 2017, an 8%increase compared to the same period in 2016.

• Insurance service revenues grew 9% over the same period in 2016 to $2,086.2 million.

• Professional service revenues increased 3% over the same period in 2016 to $341.3 million.

Net Service Revenues were $605.9 million for the first nine months of 2017, representing a 28%increase from the same period in 2016. This was driven by the increase in Net Insurance Service Revenues which grew 88% over the same period in 2016 which was primarily attributable to increased participation in our health plans combined with an increase in health insurance service fees per plan participant. Insurance service revenues per Average WSE increased 9%, while insurance costs per Average WSE increased2%.

Operating income was $169.1 million, up 108% from the first nine months of 2016, primarily due to improvement in our insurance services revenues as noted above, partially offset by a 13%increase in other operating expenses to support our initiatives and additional costs associated with our internal control remediation efforts. Refer to the Other Operating Expenses section in this Results of Operations for further detail.

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MANAGEMENT'S DISCUSSION AND ANALYSIS

Worksite Employees (WSE)

Historically, Total WSE comparisons have served as an indicator of our success in growing our business and retaining clients. Average WSE growth is another volume measure we use to monitor the performance of our business.

Average WSEs decreased 2% in the third quarter of 2017 compared to the same period in 2016 and remained flat in the first nine months of 2017 compared to the same period in 2016. The quarter and year to date changes in Average WSEs are a result of WSE growth in our established customer base, offset by higher attrition, including attrition from migrating our clients to a common platform. Furthermore, we moderated our new customer growth as we expanded the functionality of our new industry vertical, TriNet Main Street.

Anticipated revenues for future periods can diverge from Total WSEs due to pricing differences across our HR solutions and services and the degree to which clients and WSEs elect to participate in our solutions. In addition to driving the growth in WSE count, we also focus on pricing strategies and product differentiation to maximize our revenue opportunities. Average monthly total revenues per WSE, as a measure to monitor the success of such pricing strategies, have increased 9% and 8% in the third quarter and first nine months of 2017, respectively, compared to the same periods in 2016.

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MANAGEMENT'S DISCUSSION AND ANALYSIS

Professional Service Revenues (PSR)

Professional service revenues represented 14% of total revenues in both the third quarter and first nine months of 2017. The slight increase in professional service revenues during the third quarter of 2017 was primarily attributed to a 5% increase in PSR per Average WSE when compared to the same period in 2016, partially offset by a decrease in Average WSEs when compared to the same period in 2016.

The increase in PSR during the first nine months of 2017 was attributed to the 3% increase in PSR per Average WSE when compared to the same period in 2016.

Insurance Service Revenues (ISR)

Insurance service revenues represented 86% of total revenue in the third quarter and first nine months of 2017. Insurance service revenues increased 7% and 9% in the third quarter and first nine months of 2017, respectively, when compared to the same periods in 2016. The growth in insurance service revenues for the third quarter of 2017 was attributable to increased participation in our health plans combined with an equal increase in health insurance service fees per plan participant. The growth in insurance service revenues for the first nine months of 2017 was primarily attributable to increased participation in our health plans combined with an increase in health insurance service fees per plan participant.

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MANAGEMENT'S DISCUSSION AND ANALYSIS

Insurance Costs

Insurance costs increased 1% and 3% for the third quarter and first nine months of 2017, respectively, compared to the same period in 2016, primarily as a result of an increase in health plan participants, partially offset by a decrease in insurance claims costs and administrative costs per average participant.

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MANAGEMENT'S DISCUSSION AND ANALYSIS

Other Operating Expenses (OOE)

Other operating expenses includes cost of providing services (COPS), sales and marketing (S&M), general and administrative (G&A), and systems development and programming (SD&P) expenses.

We manage other operating expenses and allocate resources across different business functions based on percentage of Net Service Revenues. This ratio has decreased to 65% from 76% in the third quarter of 2017 and has decreased to 68% from 77% in the first nine months of 2017, when compared to the same periods in 2016.

We had approximately 2,700 corporate employees as of September 30, 2017 in 47 offices across the U.S. Our corporate employees' compensation related expenses represent a majority of our operating expenses. Compensation costs for our corporate employees include payroll, payroll taxes, stock-based compensation, bonuses, commissions and other payroll and benefits related costs. The percentage of compensation related expense to other operating expense has decreased to 62% from 65% in the third quarter of 2017, and has decreased to 64% from 67% in in the first nine months of 2017, when compared to the same periods in 2016. These decreases are primarily due to increased non-compensation related costs associated with our vertical product development, platform integrations, and internal control remediation efforts.

We expect our operating expenses to increase in the foreseeable future due to expected growth, our continued strategy to develop new vertical products, continued platform integrations, and additional costs associated with our internal control remediation efforts. We will continue to improve our systems, processes, and internal controls. These expenses may fluctuate as a percentage of our total revenues from period-to-period depending on the timing of when expenses are incurred.

We also expect commission expense, which is included in sales and marketing, to decrease in 2018 with the planned adoption of ASU 2016-10 in the first quarter of 2018. We anticipate that incremental, non-perpetual client acquisition costs will be deferred and amortized to expense over the expected client tenure.

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MANAGEMENT'S DISCUSSION AND ANALYSIS

Q3 2017 - Q3 2016 Commentary

Other operating expenses increased $11.9 million or 10% in the third quarter of 2017 compared to the same period in 2016 as part of our continued investment in supporting our infrastructure, improving our technology platform user experience for our clients, and our internal control remediation efforts. Significant drivers of our increased spending are as follows:

• Accounting and other professional fees increased$8.1 million primarily as a result of increased professional fees to support our internal control remediation efforts.

• Consulting expenses increased$3.8 million and included costs associated with enhancing our product offerings.

• Compensation costs for our corporate employees increased$3.5 million primarily due to increased headcount related to investments in technology, sales and client services functions to support product delivery and platform integration.

• Other expenses decreased$3.5 million primarily due to a reduction in local tax compliance costs.

YTD 2017 - YTD 2016 Commentary

Other operating expenses increased $48.6 million, or 13%, in the first nine months of 2017 compared to the same period in 2016. Significant drivers of our increased spending are as follows:

• Total compensation costs increased$18.9 million, or 8%, primarily due to increased headcount related to investments in technology and client services functions to support product delivery and platform integration as well as an increase in sales related compensation costs associated with a new sales performance incentive program.

• Consulting expenses increased$11.9 million due to the factors described above and also included costs associated with payroll tax compliance initiatives.

• Accounting and other professional fees increased$11.4 million primarily as a result of the professional fees to support our internal control remediation efforts.

• Other expenses increased$6.4 million primarily due to additional compliance costs and external sales costs.

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MANAGEMENT'S DISCUSSION AND ANALYSIS

Amortization of Intangible Assets

Amortization of intangible assets represents costs associated with acquired companies' developed technologies, client lists, trade names and contractual agreements. Amortization expenses decreased 72% and 73% in the third quarter and first nine months of 2017, respectively, compared to the same periods in 2016, as a result of the revision to the expected useful life in October 2016 of certain client lists and trademarks primarily related to our previous acquisitions.

Depreciation

Depreciation expense increased 49% in the third quarter and first nine months of 2017, compared to the same periods in 2016, as a result of our additional investment in technology products and platforms and the associated depreciation of those assets.

Other Income (Expense)

Other income (expense) consists primarily of interest expense under our credit facility and decreased 3% and 4% in the third quarter and first nine months of 2017, respectively, compared to the same periods in 2016 due to a decreasing principal balance on our outstanding debt.

Provision for Income Taxes

Our effective income tax rate was 26.3% and 38.4% for the three months ended September 30, 2017 and 2016, respectively, and 28.2% and 41.8% for the nine months ended September 30, 2017 and 2016, respectively. These decreases are primarily due to a discrete tax benefit recognized upon adoption of ASU 2016-09, a tax benefit resulting from qualified production activities deduction for certain software offerings, a tax benefit from an increase in excludable income for state tax purposes which is partially offset by a discrete charge due to changes in uncertain tax positions, and a tax benefit in non-deductible expenses due to the abatement of penalties previously assessed by the Internal Revenue Service (IRS). The remaining decrease is attributable to tax credits and disqualifying dispositions of previously nondeductible stock based compensation.

Liquidity and Capital Resources

Liquidity

We manage our liquidity separately between assets and liabilities that are WSE related from our corporate assets and liabilities.

WSE related assets and liabilities primarily consist of current assets and current liabilities resulting from transactions directly or indirectly associated with WSEs, including payroll and related taxes and withholdings, our sponsored workers' compensation and health insurance programs, and other benefit programs. Our cash flows related to WSE payroll and benefits is generally matched by advance collection from our clients which is reported as payroll funds collected within WSE related assets.

We report our corporate cash and cash equivalents on the condensed consolidated balance sheets separately from WSE related assets. We rely on our corporate cash and cash equivalents and cash from operations to satisfy our operational and regulatory requirements and to fund capital expenditures. We believe that we have sufficient corporate liquidity and capital resources to satisfy future requirements and meet our obligations to clients, creditors and debt holders. We believe that our existing corporate cash and cash equivalents, working capital and cash provided by operating activities will be sufficient to meet our working capital and capital expenditure needs for at least the next 12 months.

16

MANAGEMENT'S DISCUSSION AND ANALYSIS

Our liquid assets are as follows:

(in thousands)	September 30, 2017		December 31, 2016
Cash and cash equivalents	$	263,527	$	184,004
Working capital:
Corporate working capital	180,497		151,295
WSE related assets, net of WSE related liabilities	6,345		5,476

We manage our sponsored benefit and workers' compensation insurance obligations by maintaining funds in restricted cash, cash equivalents and investments as collateral. As of September 30, 2017, we had $157.0 million of restricted cash, cash equivalents and investments included in WSE related assets and $160.2 million of marketable securities designated as long-term restricted cash, cash equivalents and investments on the condensed consolidated balance sheets. These collateral amounts are generally determined at the beginning of each plan year and we may be required by our insurance carriers to adjust the balance when facts and circumstances change. We regularly review our collateral balances with our insurance carriers, and anticipate funding further collateral as needed based on program development.

Capital Resources

We believe that we can meet our present and reasonably foreseeable operating cash needs and future commitments through existing liquid assets, continuing cash flows from operations, our borrowing capacity under our revolving credit facility and the potential issuance of debt or equity securities.

We maintain a $75.0 million revolving credit facility. The total unused portion of our revolving credit facility was $59.5 million as of September 30, 2017.

Cash Flows

We generated positive cash flows from operating activities for the first nine months of 2017 and 2016. We also have borrowing capacity under our revolving credit facility and the potential to generate cash through the issuance of debt or equity securities, to meet short-term funding requirements. The following table presents our cash flow activities for the stated periods:

	Nine Months Ended September 30,
(in thousands)	2017			2016
Net cash provided by (used in):
Operating activities	$	158,951		$	80,699
Investing activities	(14,763		)	(17,411		)
Financing activities	(65,063		)	(68,998		)
Effect of exchange rates on cash and cash equivalents	398			90
Net increase in cash and cash equivalents	$	79,523		$	(5,620	)

17

MANAGEMENT'S DISCUSSION AND ANALYSIS

Operating Activities

Components of net cash provided by operating activities are as follows:

	Nine Months Ended September 30,
(in thousands)	2017			2016
Net income	$	111,524		$	38,440
Depreciation and amortization	26,177			27,810
Stock-based compensation expense	21,406			20,169
Payment of interest	(12,186		)	(11,651		)
Income tax (payments) refunds, net	138			(27,650		)
Collateral (paid to) refunded from insurance carriers, net	(3,163		)	(22,911		)
Changes in other operating assets and liabilities	15,055			56,492
Net cash provided by operating activities	$	158,951		$	80,699

The period-to-period fluctuation in cash provided by operating activities is primarily driven by the 190% increase in our net income, decrease in payments of our tax liabilities, decreases in collateral paid to our workers' compensation insurance carriers, changes in other operating assets and liabilities, which are primarily driven by the timing of payments related to WSE related assets and liabilities, and our accrued expenses related to corporate employee compensation related payables.

Investing Activities

Net cash used in investing activities in the first nine months of 2017 and 2016 primarily consisted of cash paid for capital expenditures, offset partially by proceeds from the maturity of investments.

	Nine Months Ended September 30,
(in thousands)	2017		2016
Capital expenditures:
Software and hardware	$	22,816	$	21,515
Office furniture, equipment and leasehold improvements	6,394		6,427
Cash used in capital expenditures	$	29,210	$	27,942
Investments:
Purchases of restricted investments	$	—	$	(14,959	)
Proceeds from maturity of restricted investments	14,447		25,790
Cash provided by investments	$	14,447	$	10,831

Capital expenditures increased in the first nine months of 2017 compared to the same period in 2016, primarily due to our investments in software and hardware to introduce new products, enhance existing products and platforms, as well as complete platform integrations. We expect capital investments in our software and hardware to continue in the future.

We invest cash held as collateral to satisfy our long-term obligation towards the workers' compensation liabilities in U.S. long-term treasuries and mutual funds. We review the amount of investment and the anticipated holding period regularly, in conjunction with our estimated long-term workers' compensation liabilities and anticipated claims payment trend.

18

MANAGEMENT'S DISCUSSION AND ANALYSIS

Financing Activities

Net cash used in financing activities in the first nine months of 2017 and 2016 consisted primarily of repurchases of our common stock and repayment of debt.

The board of directors from time to time authorizes stock repurchases of our outstanding common stock primarily to offset dilution from the issuance of stock under our equity-based incentive plan and employee stock purchase plan. During the first nine months of 2017, we repurchased 1.4 million shares of common stock for $39.3 million. As of September 30, 2017, approximately $20.7 million remained available for repurchase.

Critical Accounting Policies, Estimates and Judgments

There have been no material changes to our critical accounting policies as discussed in our 2016 Form 10-K.

Recent Accounting Pronouncements

Refer to Note 1 in the condensed consolidated financial statements and related notes included in this Form 10-Q.

19

QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

AND CONTROLS AND PROCEDURES

Quantitative and Qualitative Disclosures About Market Risk

There has been no material change in our exposure to market risks from that discussed in Item 7A of our 2016 Form 10-K.

Controls and Procedures

Evaluation of Disclosure Controls and Procedures

We have, with the participation of our Chief Executive Officer (CEO) and our Chief Financial Officer (CFO), evaluated the effectiveness of our disclosure controls and procedures as of September 30, 2017. The term “disclosure controls and procedures,” as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended, or the Exchange Act, means controls and other procedures of a company that are designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the SEC’s rules and forms.

Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is accumulated and communicated to the company’s management, including its principal executive officer and principal financial officer, as appropriate to allow timely decisions regarding required disclosure. Based on the evaluation of our disclosure controls and procedures as of September 30, 2017, our CEO and CFO concluded that, as of such date, our disclosure controls and procedures were not effective as a result of the material weaknesses in our internal control over financial reporting. A material weakness is a deficiency, or a combination of deficiencies, in internal control over financial reporting such that there is a reasonable possibility that a material misstatement of our annual or interim financial statements will not be prevented or detected on a timely basis.

Notwithstanding the material weaknesses in our internal control over financial reporting, we have concluded that the condensed consolidated financial statements included in this Quarterly Report on Form 10-Q fairly present, in all material respects, our financial position, results of operations and cash flows for the periods presented in conformity with accounting principles generally accepted in the United States of America. Additionally, the material weaknesses did not result in any restatements of our condensed consolidated financial statements or disclosures for any prior period.

Additional Analyses and Procedures and Remediation Plan

We are taking specific steps to remediate the material weaknesses identified by management and described in greater detail in our 2016 Form 10-K. Although we intend to complete the remediation process with respect to these material weaknesses as quickly as possible, we cannot at this time estimate how long it will take, and our remediation plan may not prove to be successful.

Because the reliability of the internal control process requires repeatable execution, the successful remediation of these material weaknesses will require review and evidence of effectiveness prior to concluding that the controls are effective and there is no assurance that additional remediation steps will not be necessary. As such, as we continue to evaluate and work to improve our internal control over financial reporting, our management may decide to take additional measures to address the material weaknesses or modify the remediation steps already underway. As noted above, although we plan to complete the remediation process as quickly as possible, we cannot at this time estimate how long it will take, and our initiatives may not prove to be successful. Accordingly, until these weaknesses are remediated, we plan to perform additional analyses and other procedures to ensure that our condensed consolidated financial statements are prepared in accordance with GAAP.

Changes in Internal Control Over Financial Reporting

Other than the remediation efforts underway, there were no changes in our internal control over financial reporting identified in connection with the evaluation required by Rule 13a-15(d) and 15d-15(d) of the Exchange Act that occurred during the quarter ended September 30, 2017, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Limitations on Effectiveness of Controls and Procedures

In designing and evaluating the disclosure controls and procedures, management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives. In addition, the design of disclosure controls and procedures must reflect the fact that there are resource constraints and that management is required to apply judgment in evaluating the benefits of possible controls and procedures relative to their costs.

20

FINANCIAL STATEMENTS

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

(in thousands, except share and per share data)	September 30, 2017			December 31, 2016
Assets
Current assets:
Cash and cash equivalents	$	263,527		$	184,004
Restricted cash and cash equivalents	15,445			14,569
Prepaid income taxes	—			42,381
Prepaid expenses	11,013			10,784
Other current assets	2,360			2,145
Worksite employee related assets	941,213			1,281,471
Total current assets	1,233,558			1,535,354
Workers' compensation collateral receivable	39,931			31,883
Restricted cash, cash equivalents and investments	160,207			130,501
Property and equipment, net	68,470			58,622
Goodwill	289,207			289,207
Other intangible assets, net	27,108			31,074
Other assets	18,444			18,502
Total assets	$	1,836,925		$	2,095,143
Liabilities and stockholders’ equity
Current liabilities:
Accounts payable	$	28,995		$	22,541
Accrued corporate wages	31,814			30,937
Notes and capital leases payable, net	36,718			36,559
Other current liabilities	14,321			12,551
Worksite employee related liabilities	934,868			1,275,995
Total current liabilities	1,046,716			1,378,583
Notes and capital leases payable, net, noncurrent	394,972			422,495
Workers' compensation loss reserves (net of collateral paid of $20,307 and $22,377 at September 30, 2017 and December 31, 2016, respectively)	157,999			159,301
Deferred income taxes	90,845			92,373
Other liabilities	14,534			7,801
Total liabilities	1,705,066			2,060,553
Commitments and contingencies (see Note 9)
Stockholders’ equity:
Preferred stock ($0.000025 par value per share; 20,000,000 shares authorized; no shares issued and outstanding at September 30, 2017 and December 31, 2016)	—			—
Common stock and additional paid-in capital ($0.000025 par value per share; 750,000,000 shares authorized; 69,536,268 and 69,015,690 shares issued and outstanding at September 30, 2017 and December 31, 2016, respectively)	567,971			535,132
Accumulated deficit	(435,739		)	(499,938		)
Accumulated other comprehensive loss	(373		)	(604		)
Total stockholders’ equity	131,859			34,590
Total liabilities and stockholders’ equity	$	1,836,925		$	2,095,143

See accompanying notes.

21

FINANCIAL STATEMENTS

CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME

(Unaudited)

	Three Months Ended September 30,						Nine Months Ended September 30,
(in thousands, except share and per share data)	2017			2016			2017			2016
Professional service revenues	$	112,530		$	110,493		$	341,293		$	332,489
Insurance service revenues	706,763			659,964			2,086,151			1,916,753
Total revenues	819,293			770,457			2,427,444			2,249,242
Insurance costs	613,397			609,422			1,821,574			1,775,784
Cost of providing services (exclusive of depreciation and amortization of intangible assets)	49,989			50,142			157,264			139,881
Sales and marketing	44,407			41,470			139,538			133,978
General and administrative	28,505			22,477			82,031			69,078
Systems development and programming	11,182			8,124			33,637			20,970
Amortization of intangible assets	1,300			4,662			3,966			14,647
Depreciation	7,754			5,188			20,353			13,663
Total costs and operating expenses	756,534			741,485			2,258,363			2,168,001
Operating income	62,759			28,972			169,081			81,241
Other income (expense):
Interest expense and bank fees	(5,425		)	(5,597		)	(15,030		)	(15,677		)
Other, net	770			313			1,192			434
Income before provision for income taxes	58,104			23,688			155,243			65,998
Income tax expense	15,268			9,107			43,719			27,558
Net income	$	42,836		$	14,581		$	111,524		$	38,440
Other comprehensive income, net of tax	151			(125		)	231			300
Comprehensive income	$	42,987		$	14,456		$	111,755		$	38,740
Net income per share:
Basic	$	0.62		$	0.21		$	1.62		$	0.55
Diluted	$	0.60		$	0.20		$	1.57		$	0.53
Weighted average shares:
Basic	69,498,218			70,187,989			69,016,054			70,478,266
Diluted	71,499,591			71,964,603			71,138,743			72,126,060

See accompanying notes.

22

FINANCIAL STATEMENTS

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

	Nine Months Ended September 30,
(in thousands)	2017			2016
Operating activities
Net income	$	111,524		$	38,440
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	26,177			27,810
Stock-based compensation	21,406			20,169
Changes in operating assets and liabilities:
Restricted cash and cash equivalents	(45,570		)	(31,409		)
Prepaid income taxes	42,448			386
Prepaid expenses and other current assets	(961		)	(5,253		)
Workers' compensation collateral receivable	(8,048		)	(11,374		)
Other assets	925			438
Accounts payable	5,505			4,538
Accrued corporate wages and other current liabilities	2,331			4,548
Workers' compensation loss reserves and other non-current liabilities	3,574			33,510
Worksite employee related assets	340,767			525,841
Worksite employee related liabilities	(341,127		)	(526,945		)
Net cash provided by operating activities	158,951			80,699
Investing activities
Acquisitions of businesses	—			(300		)
Purchases of marketable securities	—			(14,959		)
Proceeds from maturity of marketable securities	14,447			25,790
Acquisitions of property and equipment	(29,210		)	(27,942		)
Net cash used in investing activities	(14,763		)	(17,411		)
Financing activities
Repurchase of common stock	(39,347		)	(43,747		)
Proceeds from issuance of common stock on exercised options	8,678			3,584
Proceeds from issuance of common stock on employee stock purchase plan	2,441			2,304
Awards effectively repurchased for required employee withholding taxes	(8,100		)	(2,672		)
Proceeds from issuance of notes payable	—			57,978
Payments for extinguishment of debt	—			(57,563		)
Repayment of notes and capital leases payable	(28,735		)	(27,506		)
Payment of debt issuance costs	—			(1,376		)
Net cash used in financing activities	(65,063		)	(68,998		)
Effect of exchange rate changes on cash and cash equivalents	398			90
Net increase in cash and cash equivalents	79,523			(5,620		)
Cash and cash equivalents at beginning of period	184,004			166,178
Cash and cash equivalents at end of period	$	263,527		$	160,558
Supplemental disclosures of cash flow information
Interest paid	$	12,186		$	11,651
Income taxes paid (refunded), net	(138		)	27,650
Supplemental schedule of noncash investing and financing activities
Payable for purchase of property and equipment	$	2,450		$	1,363

See accompanying notes.

23

FINANCIAL STATEMENTS

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

NOTE 1. DESCRIPTION OF BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES

Description of Business

TriNet Group Inc. (TriNet, or the Company, we, our and us), a professional employer organization (PEO) founded in 1988, provides comprehensive human resources (HR) solutions for small to midsize businesses (SMBs) under a co-employment model. These HR solutions include bundled services, such as multi-state payroll processing and tax administration, employee benefits programs, including health insurance and retirement plans, workers' compensation insurance and claims management, employment and benefit law compliance, and other services. Through the co-employment relationship, we are the employer of record for most administrative and regulatory purposes, including:

• compensation through wages and salaries,

• employer payroll-related taxes payment,

• employee payroll-related taxes withholding and payment,

• employee benefit programs including health and life insurance, and others, and

• workers' compensation coverage.

Our clients are responsible for the day-to-day job responsibilities of the worksite employees (WSEs).

We operate in one reportable segment. All of our service revenues are generated from external clients. Less than 1% of revenue is generated outside of the U.S.

Basis of Presentation

These unaudited condensed consolidated financial statements (Financial Statements) and accompanying notes have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) for interim financial reporting and the instructions to Form 10-Q and Rule 10-01 of Regulation S-X of the Rules and Regulations of the Securities and Exchange Commission (SEC). Certain information and note disclosures included in the annual financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. In the opinion of management, the condensed consolidated financial statements reflect all adjustments, which are normal and recurring in nature, necessary for fair financial statement presentation. The results of operations for the third quarter of 2017 are not necessarily indicative of the operating results anticipated for the full year. These Financial Statements should be read in conjunction with the audited Consolidated Financial Statements included in Part II, Item 8 of our Annual Report on Form 10-K for the year ended December 31, 2016 (2016 Form 10-K).

Use of Estimates

The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect certain reported amounts and related disclosures. Significant estimates include:

• liability for unpaid losses and loss adjustment expenses (loss reserves) related to workers' compensation and workers' compensation collateral receivable,

• health insurance loss reserves,

• liability for insurance premiums payable,

• impairments of goodwill and other intangible assets,

• income tax assets and liabilities, and

• liability for legal contingencies.

These estimates are based on historical experience and on various other assumptions that we believe to be reasonable from the facts available to us. Some of the assumptions are highly uncertain at the time of estimation. To the extent actual experience differs from the assumptions used, our consolidated financial statements could be materially affected.

24

FINANCIAL STATEMENTS

Recent Accounting Pronouncements

Recently adopted accounting guidance

Share-based payments - In March 2016, the FASB issued ASU 2016-09-Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting, as part of the Simplification Initiative to simplify certain aspects of the accounting for share-based payment transactions to employees. The new standard requires excess tax benefits and tax deficiencies to be recorded in the statements of income as a component of the provision for income taxes when stock awards vest or are settled. In addition, it eliminates the requirement to reclassify cash flows related to excess tax benefits from operating activities to financing activities on the condensed consolidated statements of cash flows. The standard also provides an accounting policy election to account for forfeitures as they occur, allows us to withhold more of an employee’s vesting shares for tax withholding purposes without triggering liability accounting, and clarifies that all cash payments made to tax authorities on an employee’s behalf for withheld shares should be presented as a financing activity on our cash flows statement. The new standard was effective for us beginning January 1, 2017.

Upon adoption, excess tax benefits or deficiencies from share-based award activity were reflected in the condensed consolidated statements of income as a component of the provision for income taxes, whereas they previously were recognized in equity. We also elected to account for forfeitures as they occur, rather than estimate expected forfeitures. The adoption of ASU 2016-09 resulted in a net cumulative-effect adjustment of $0.3 million, reflected as an increase to retained earnings as of January 1, 2017, mostly related to the recognition of the previously unrecognized excess tax benefits using the modified retrospective method. The previously unrecognized excess tax effects were recorded as an increase to deferred tax assets.

We adopted the aspects of the standard affecting the cash flow presentation retrospectively, and accordingly, to conform to the current year presentation, we reclassified$2.6 million of tax deficiencies under financing activities to operating activities for the period ended September 30, 2016, on our condensed consolidated statements of cash flows. The presentation requirements for cash flows related to employee taxes paid for withheld shares had no impact to any of the periods presented on our condensed consolidated statements of cash flows since such cash flows have historically been presented as a financing activity.

Recently issued accounting pronouncements

Lease arrangements -In February 2016, the FASB issued ASU 2016-02-Leases. The amendment requires that lease arrangements longer than 12 months result in an entity recognizing lease assets and lease liabilities. Most significant impact is on those leases classified as operating leases under previous U.S. GAAP. Under the new standard, disclosures are required to meet the objective of enabling users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases.

The amendment is effective for annual reporting periods, and interim periods within those years beginning after December 15, 2018. We currently anticipate adoption of the new standard effective January 1, 2019.

We anticipate this standard will have a material impact on our condensed consolidated financial statements. While we are continuing to assess all potential impacts of the standard, we currently believe the most significant impact relates to our accounting for equipment, office and data-center operating leases.

Financial Instruments - In January 2016, the FASB issued ASU 2016-01-Recognition and Measurement of Financial Assets and Financial Liabilities. The amendment addresses various aspects of the recognition, measurement, presentation, and disclosure for financial instruments. The amendment is effective for annual reporting periods, and interim periods within those years beginning after December 15, 2017. Early adoption by public entities is permitted only for certain provisions. We are currently in the process of evaluating the impact of the adoption of this standard on our condensed consolidated financial statements.

25

FINANCIAL STATEMENTS

Revenue Recognition - In May 2014, the FASB issued ASU 2014-09-Revenue from Contracts with Customers, which will replace most existing revenue recognition guidance under GAAP. The core principle of the guidance is that an entity should recognize revenue for the transfer of promised goods or services to customers that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard provides a five-step analysis of transactions to determine when and how revenue is recognized. In July 2015, the FASB deferred the effective date to annual reporting periods, and interim periods within those years, beginning after December 15, 2017. Early adoption at the original effective date of December 15, 2016 is permitted. The amendments may be applied retrospectively or as a cumulative-effect adjustment as of the date of adoption. In March, April and May 2016, the FASB issued ASU 2016-08 Principal versus Agent Considerations (Reporting Revenue Gross versus Net), ASU 2016-10 Identifying Performance Obligations and Licensing, ASU 2016-12 Narrow-Scope Improvements and Practical Expedients and ASU 2016-20 Technical Corrections and Improvements, respectively, providing further clarification to be considered when implementing ASU 2014-09. The guidance permits two methods of adoption: retrospectively to each prior reporting period presented (full retrospective method), or retrospectively with the cumulative effect of initially applying the guidance recognized at the date of initial application (the modified retrospective method). We currently anticipate adopting the new standard effective beginning January 1, 2018 using the modified retrospective method.

Under the modified retrospective method, the new standard will be applied to all contracts initiated on or after the effective date. For contracts with remaining obligations as of the effective date, opening retained earnings will be adjusted for the cumulative effect of the change to the new standard as of the effective date.

We anticipate this standard will have a material impact on our condensed consolidated financial statements. While we do not anticipate this standard will result in a material adjustment to beginning balance retained earnings, we do anticipate this standard will have a material impact on our condensed consolidated financial statements on a prospective basis. Specifically, we currently believe the adoption will have a material impact on our accounting for sales commission expense, deferred revenue, income tax provision and deferred taxes. We anticipate that certain client acquisition costs will be deferred over the expected client tenure. We expect our professional service revenues and insurance service revenues will remain substantially unchanged. The actual revenue recognition treatment required under the standard will be dependent on contract specific terms, and may vary in some instances from recognition at the time of billing.

At the date of adoption, we expect to record a net cumulative effect adjustment in retained earnings associated with unamortized deferred revenue and sales commission related to any open customer contracts as of adoption date.

Statement of Cash Flows - In November and August 2016, the FASB issued (ASU) 2016-18 - Statement of Cash Flows (Topic 230): Restricted Cash and 2016-15-Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. The new guidance is intended to reduce diversity in practice in how restricted cash and other certain transactions are classified in the statement of cash flows. The amendments are effective for annual reporting periods, and interim periods within those years, beginning after December 15, 2017. Early adoption is permitted, provided that all of the amendments are adopted in the same period. The guidance requires application using a retrospective transition method.

As of September 30, 2017 and December 31, 2016, we had total restricted cash, restricted cash equivalents and payroll funds collected of $748.5 million and $1.0 billion, respectively. Currently, changes in these balances are presented as operating cash activities in the condensed consolidated statements of cash flows. Under the new guidance, changes in these amounts will be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the condensed consolidated statements of cash flows.

Although there are several other new accounting pronouncements issued or proposed by the FASB, which we have adopted or will adopt, as applicable, we do not believe any of these other accounting pronouncements have had or will have a material impact on its consolidated financial position, operating results or statements of cash flows.

26

FINANCIAL STATEMENTS

NOTE 2. CASH, CASH EQUIVALENTS AND INVESTMENTS

Under the terms of the agreements with certain of our workers' compensation and health benefit insurance carriers, we are required to maintain collateral in trust accounts for the benefit of specified insurance carriers and to reimburse the carriers’ claim payments within our deductible layer. We invest a portion of the collateral amounts in marketable securities. We report the current portion of these trust accounts as restricted cash and cash equivalents in WSE related assets, and the long-term portion as restricted cash, cash equivalents and investments on the condensed consolidated balance sheets.

We require our clients to prefund their payroll and related taxes and other withholding liabilities before payroll is processed or due for payment. These amounts that are prefunded by clients are included in WSE related assets as payroll funds collected and are designated to pay pending payrolls and other WSE related liabilities.

Our total corporate and WSE related cash, cash equivalents and investments are summarized below:

	September 30, 2017								December 31, 2016
(in thousands)	Cash and cash equivalents		Available for sale marketable securities		Certificate of deposits		Total		Cash and cash equivalents		Available for sale marketable securities		Certificate of deposits		Total
Cash and cash equivalents	$	263,527	$	—	$	—	$	263,527	$	184,004	$	—	$	—	$	184,004
Restricted cash and cash equivalents	15,445		—		—		15,445		14,569		—		—		14,569
Restricted cash, cash equivalents and investments, noncurrent
Collateral for workers' compensation claims	123,366		36,841		—		160,207		78,672		51,829		—		130,501
Worksite employee related assets
Restricted cash, cash equivalents and investments, current
Collateral for health benefits claims	68,907		—		—		68,907		65,022		—		—		65,022
Collateral for workers' compensation claims	85,284		508		—		85,792		64,773		—		—		64,773
Collateral to secure standby letter of credit	—		—		2,324		2,324		—		—		2,320		2,320
Total WSE related restricted cash, cash equivalents and investments, current	154,191		508		2,324		157,023		129,795		—		2,320		132,115
Payroll funds collected	455,494		—		—		455,494		825,958		—		—		825,958
Total	$	1,012,023	$	37,349	$	2,324	$	1,051,696	$	1,232,998	$	51,829	$	2,320	$	1,287,147

27

FINANCIAL STATEMENTS

NOTE 3. WORKSITE EMPLOYEE RELATED ASSETS AND LIABILITIES

WSE related assets and WSE related liabilities are intended to be reviewed together when considering the financial position of the Company. Our clients direct the price and service specifications for payroll and payroll taxes and as a result, we are not the primary obligor for payroll and payroll tax payments and therefore record these amounts net in our statements of income and comprehensive income. However, we record without offset, accrued wages and payroll tax liabilities for WSEs in WSE related liabilities with the related payroll funds collected and unbilled revenues in WSE related assets. We have classified these assets and liabilities and other service related amounts collectively as WSE related, to present a clearer picture of the inter-relationship of the balances and distinguish these from our other corporate assets and liabilities.

In addition to unbilled revenues, accrued wages and payroll tax liabilities, other significant balances included in the WSE related assets and liabilities include:

• Payroll funds collected, which represents cash collected from clients in advance to fund payroll and payroll taxes, and other payroll related liabilities;

• Other payroll assets, which primarily include payroll tax receivables;

• Client deposits, which represents indemnity guarantee payments received from clients and collections from clients in excess of payroll and other payroll related liabilities;

• Other payroll withholdings, which primarily includes withholdings under 401(k) plans and flexible benefit plans.

(in thousands)	September 30, 2017		December 31, 2016
Worksite employee related assets:
Restricted cash, cash equivalents and investments	$	157,023	$	132,115
Payroll funds collected	455,494		825,958
Unbilled revenue (net of advance collections of $10,038    and $8,602 at September 30, 2017 and December 31, 2016,    respectively)	284,136		293,192
Accounts receivable (net of allowance for doubtful accounts of    $304 and $292 at September 30, 2017 and December 31, 2016,    respectively)	5,912		4,854
Prepaid insurance premiums	27,200		12,805
Workers' compensation collateral receivable	1,417		2,136
Other payroll assets	10,031		10,411
Total worksite employee related assets	$	941,213	$	1,281,471
Worksite employee related liabilities:
Accrued wages	$	274,123	$	272,966
Client deposits	28,096		56,182
Payroll tax liabilities	368,207		692,460
Unpaid losses and loss adjustment expenses (less than 1 year):
Health benefits loss reserves	129,681		129,430
Workers' compensation loss reserves (net of collateral paid of $7,105 and $9,234 at September 30, 2017 and December 31, 2016, respectively)	63,683		63,702
Insurance premiums and other payables	25,654		14,223
Other payroll withholdings	45,424		47,032
Total worksite employee related liabilities	$	934,868	$	1,275,995

Included in the payroll tax liabilities and insurance premiums and other payables were amounts relating to approximately 2,700 and 2,600 corporate employees at September 30, 2017 and December 31, 2016, respectively.

28

FINANCIAL STATEMENTS

NOTE 4. WORKERS' COMPENSATION LOSS RESERVES

The following table summarizes the workers’ compensation loss reserve activity for the three and nine months ended September 30, 2017 and 2016:

	Three Months Ended September 30,						Nine Months Ended September 30,
(in thousands)	2017			2016			2017			2016
Total loss reserves, beginning of period	$	254,684		$	214,711		$	254,614		$	190,102
Incurred
Current year	22,618			26,717			69,745			78,063
Prior years	(4,294		)	4,947			(2,797		)	12,951
Total incurred	18,324			31,664			66,948			91,014
Paid
Current year	(3,464		)	(6,738		)	(9,101		)	(9,016		)
Prior years	(20,450		)	(17,130		)	(63,367		)	(49,593		)
Total paid	(23,914		)	(23,868		)	(72,468		)	(58,609		)
Total loss reserves, end of period	$	249,094		$	222,507		$	249,094		$	222,507

The following summarizes workers' compensation liabilities on the condensed consolidated balance sheets:

(in thousands)	September 30, 2017			December 31, 2016
Total loss reserves, end of period	$	249,094		$	254,614
Collateral paid to carriers and offset against loss reserves	(27,412		)	(31,611		)
Total loss reserves, net of carrier collateral offset	$	221,682		$	223,003
Payable in less than 1 year (1)  (net of collateral paid to carriers of $7,105 and $9,234 at September 30, 2017 and December 31, 2016, respectively)	$	63,683		$	63,702
Payable in more than 1 year (net of collateral paid to carriers of $20,307 and $22,377 at September 30, 2017 and December 31, 2016, respectively)	157,999			159,301
Total loss reserves, net of carrier collateral offset	$	221,682		$	223,003

(1) Included in WSE related liabilities within Note 3 to these condensed consolidated financial statements.

Incurred claims related to prior years represent changes in estimates for ultimate losses on workers' compensation claims. For the three and the nine months ended September 30, 2017, the change was primarily due to favorable claims development associated with our non-office WSEs in recent accident years.

As of September 30, 2017 and December 31, 2016, we had $68.8 million and $65.6 million, respectively, of collateral held by insurance carriers of which $27.4 million and $31.6 million, respectively, was offset against workers' compensation loss reserves as the agreements permit and are net settled of insurance obligations against collateral held. Collateral paid to each carrier for a policy year in excess of our loss reserves is recorded as workers' compensation collateral receivable.

29

FINANCIAL STATEMENTS

NOTE 5. FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS

Cash, Cash equivalents and Restricted Investments

We classify our cash, cash equivalents and restricted investments in marketable securities within Level I in the fair value hierarchy because we use quoted market prices to determine the fair value. We classify our certificates of deposit within Level II in the fair value hierarchy as we use a market approach that compares fair values on certificates with similar maturities. We have no available for sale securities included in Level III as of September 30, 2017 and December 31, 2016. There was no transfer of any assets and liabilities between Levels during the nine months ended September 30, 2017 or the year ended December 31, 2016.

The following table summarizes our investments by significant categories and fair value measurements on a recurring basis as of September 30, 2017 and December 31, 2016.

(in thousands)	Maturity  (in years)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
September 30, 2017
Level 1:
Investments:
U.S. treasuries	< 3	$	36,916	$	—	$	(75	)	$	36,841
Mutual funds	N/A	500		8		—			508
Total investments		$	37,416	$	8	$	(75	)	$	37,349
Level 2:
Certificates of deposit	< 1	$	2,324	$	—	$	—		$	2,324
Total		$	39,740	$	8	$	(75	)	$	39,673
December 31, 2016
Level 1:
Investments:
U.S. treasuries	< 3	$	51,376	$	25	$	(77	)	$	51,324
Mutual funds	N/A	500		5		—			505
Total investments		$	51,876	$	30	$	(77	)	$	51,829
Level 2:
Certificates of deposit	< 1	$	2,320	$	—	$	—		$	2,320
Total		$	54,196	$	30	$	(77	)	$	54,149

There were no realized gains or losses for the nine months ended September 30, 2017 and 2016. We had $0.1 million gross unrealized losses in our U.S. Treasury securities as of September 30, 2017 and December 31, 2016. The fair value of these securities in an unrealized loss position represented 100% and 58% of the total fair value of all U.S. Treasury securities as of September 30, 2017 and December 31, 2016, respectively.

Unrealized losses are principally caused by changes in interest rates. In analyzing an issuer's financial condition, we consider whether the securities are issued by the federal government or its agencies, whether downgrades by bond rating agencies have occurred, and industry analysts' reports. As we have the ability and intent to hold these available for sale marketable securities until maturity, or for the foreseeable future, no decline was deemed to be other-than-temporary.

Notes Payable

The carrying value of our notes payable at September 30, 2017 and December 31, 2016 was $434.3 million and $462.9 million, respectively. The estimated fair values of our notes payable at September 30, 2017 and December 31, 2016 were $437.7 million and $462.9 million, respectively. These valuations are considered Level II in the hierarchy for fair value measurement and are based on quoted market prices.

30

FINANCIAL STATEMENTS

NOTE 6: STOCKHOLDERS’ EQUITY

Equity-Based Incentive Plans

Equity-based incentive plans include stock options, restricted stock units (time-based and performance-based) and other stock awards. The number of shares available for grant under these plans as of September 30, 2017 was 8.9 million.

The following table summarizes stock option activity under our equity-based plans for the nine months ended September 30, 2017:

	Number of Shares
Balance at December 31, 2016	2,815,224
Granted	—
Exercised	(1,280,726	)
Cancelled	(12,297	)
Forfeited	(57,540	)
Expired	—
Balance at September 30, 2017	1,464,661
Exercisable at September 30, 2017	1,192,694

The aggregate intrinsic value of stock options outstanding was $31.4 million and $46.2 million as of September 30, 2017 and December 31, 2016, respectively.

The following table summarizes restricted stock unit (RSU) and performance-based restricted stock unit (PSU) activity under our equity-based plans for the nine months ended September 30, 2017:

	RSUs				PSUs
	Number of Units		Weighted-Average Grant Date Fair Value		Number of Units		Weighted-Average Grant Date Fair Value
Nonvested at December 31, 2016	2,323,051		$	20.32	149,412		$	33.51
Granted	1,119,525		28.68		330,674		29.69
Vested	(795,856	)	20.41		(7,518	)	33.51
Forfeited	(232,727	)	23.38		(18,894	)	33.51
Nonvested at September 30, 2017	2,413,993		$	23.87	453,674		$	30.72

31

FINANCIAL STATEMENTS

Stock-Based Compensation

Stock-based compensation expense is measured based on the fair value of the stock option on the grant date and recognized over the requisite service period for each separately vesting portion of the stock option award. Stock-based compensation expense and other disclosures for stock-based awards made to our employees pursuant to the equity plans was as follows: 

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2017		2016		2017		2016
Cost of providing services	$	1,845	$	1,605	$	5,488	$	5,044
Sales and marketing	1,524		1,491		4,447		5,119
General and administrative	3,259		2,544		8,294		8,161
Systems development and programming costs	1,072		624		3,177		1,845
Total stock-based compensation expense	$	7,700	$	6,264	$	21,406	$	20,169
Income tax benefit related to stock-based compensation expense	$	2,813	$	2,267	$	7,621	$	7,095
Tax benefit realized from stock options exercised and similar awards	$	5,942	$	1,721	$	21,976	$	4,136

Stock Repurchases

The board of directors authorizes repurchases through an ongoing program initiated in May 2014. During the nine months ended September 30, 2017, we repurchased 1.4 million shares of common stock for $39.3 million. As of September 30, 2017, $20.7 million remained available for further repurchases of our common stock under our ongoing stock repurchase program.

NOTE 7. EARNINGS PER SHARE (EPS)

The following table presents the computation of our basic and diluted EPS attributable to our common stock:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands, except per share data)	2017		2016		2017		2016
Net income	$	42,836	$	14,581	$	111,524	$	38,440
Weighted average shares of common stock outstanding	69,498		70,188		69,016		70,478
Basic EPS	$	0.62	$	0.21	$	1.62	$	0.55
Net income	$	42,836	$	14,581	$	111,524	$	38,440
Weighted average shares of common stock	69,498		70,188		69,016		70,478
Dilutive effect of stock options and restricted stock units	2,002		1,777		2,123		1,648
Weighted average shares of common stock outstanding	71,500		71,965		71,139		72,126
Diluted EPS	$	0.60	$	0.20	$	1.57	$	0.53
Common stock equivalents excluded from income per diluted share because of their anti-dilutive effect	482		817		1,856		912

32

FINANCIAL STATEMENTS

NOTE 8. INCOME TAXES

Our effective income tax rate was 26.3% and 38.4% for the three months ended September 30, 2017 and 2016, respectively, and 28.2% and 41.8% for the nine months ended September 30, 2017 and 2016, respectively. These decreases are primarily due to a discrete tax benefit recognized upon adoption of ASU 2016-09, a tax benefit resulting from qualified production activities deduction for certain software offerings, a tax benefit from an increase in excludable income for state tax purposes which is partially offset by a discrete charge due to changes in uncertain tax positions, and a tax benefit in non-deductible expenses due to the abatement of penalties previously assessed by the Internal Revenue Service (IRS). The remaining decrease is attributable to tax credits and disqualifying dispositions of previously nondeductible stock based compensation.

During the nine months ended September 30, 2017, our unrecognized tax benefits increased from $0.9 million to $4.4 million. Of the $4.4 million, $2.5 million would affect our tax expense, if recognized. Included in the $2.5 million is $0.2 million for interest and $0.2 million for penalties. Our unrecognized tax benefits are not expected to change significantly during the next 12 months.

We are subject to tax in U.S. federal and various state and local jurisdictions, as well as Canada. We are not subject to any material income tax examinations in federal or state jurisdictions for tax years prior to January 1, 2011. We previously paid Notices of Proposed Assessments disallowing employment tax credits totaling $10.5 million, plus interest of $4.0 million in connection with an IRS examination of Gevity HR, Inc. and its subsidiaries, which were acquired by TriNet in June 2009. This issue is being resolved through litigation. With regard to these employment tax credits, we believe it is more likely than not that we will prevail and realize our receivable included in other noncurrent assets without a charge to our statement of income. Therefore, no reserve has been recognized related to this matter.

NOTE 9. COMMITMENTS AND CONTINGENCIES

Lease Commitments

We lease office facilities, including our headquarters and other facilities, and equipment under non-cancelable operating leases. For detail of these commitments refer to Note 13 in Part II, Item 8 in our 2016 Form 10-K.

In July 2017, we entered into an agreement to lease additional office space starting February 2018 for a total commitment of approximately $32.4 million over 10 years.

Credit Facilities

We maintain a $75.0 million revolving credit facility which includes capacity for a $40.0 million letter of credit facility and a $10.0 million swingline facility. Letters of credit issued pursuant to the revolving credit facility reduce the amount available for borrowing under the revolving credit facility. The total unused portion of the revolving credit facility was $59.5 million as of September 30, 2017.

The terms of the credit agreement governing the revolving credit facility require us to maintain certain financial ratios at each quarter end. We were in compliance with these covenants at September 30, 2017.

We also have a $5.0 million line of credit facility to secure standby letters of credit related to our workers' compensation obligations. At September 30, 2017, the total unused portion of the credit facility was $2.7 million.

Standby Letters of Credit

We have two unused standby letters of credit totaling $17.8 million provided as collateral for our workers’ compensation obligations. At September 30, 2017, the facilities were not drawn down.

33

FINANCIAL STATEMENTS

Contingencies    

In August 2015, Howard Welgus, a purported stockholder, filed a putative securities class action lawsuit, Welgus v. TriNet Group, Inc. et. al., under the Securities Exchange Act of 1934 in the United States District Court (the Court) for the Northern District of California. The complaint was later amended in April 2016. The amended complaint generally alleges that TriNet and the other defendants caused damage to purchasers of our stock by misrepresenting and/or failing to disclose facts generally pertaining to alleged trends affecting health insurance and workers' compensation claims. The other defendants include certain of our officers and directors, General Atlantic, LLC, a former significant shareholder, and the underwriters of our IPO. The court heard arguments on our motion to dismiss in September 2017 and took the matter under submission. We are unable to reasonably estimate the possible loss or range of losses, if any, arising from this litigation.

We are and, from time to time, have been and may in the future become involved in various litigation matters, legal proceedings and claims arising in the ordinary course of our business, including disputes with our clients or various class action, collective action, representative action and other proceedings arising from the nature of our co-employment relationship with our clients and WSEs in which we are named as a defendant. In addition, due to the nature of our co-employment relationship with our clients and WSEs, we could be subject to liability for federal and state law violations, even if we do not participate in such violations. While our agreements with our clients contain indemnification provisions related to the conduct of our clients, we may not be able to avail ourselves of such provisions in every instance. We have accrued our current best estimates of probable losses with respect to these matters which are individually and in aggregate immaterial to our condensed consolidated financial statements.

While the outcome of the matters described above cannot be predicted with certainty, management currently does not believe that any such claims or proceedings or the above mentioned securities class action will have a materially adverse effect on our consolidated financial position, results of operations or cash flows. However, the unfavorable resolution of any particular matter or our reassessment of our exposure for any of the above matters based on additional information obtained in the future could have a material impact on our consolidated financial position, results of operations or cash flows.

34

OTHER INFORMATION

Legal Proceedings

For the information required in this section, refer to Note 9 in the condensed consolidated financial statements and related notes included this Form 10-Q.

Risk Factors

There have been no material changes in our risk factors disclosed in Part 1, Item 1A, of our 2016 Form 10-K.

Unregistered Sales of Equity Securities and Use of Proceeds

(a) Sales of Unregistered Securities

Not applicable.

(b) Use of Proceeds from Sales of Unregistered Securities

Not applicable.

(c) Issuer Purchases of Equity Securities

The following table provides information about our purchases of TriNet common stock during the quarter ended September 30, 2017:

Period	Total Number of Shares Purchased (1)	Weighted Average Price Paid Per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans(2)	Approximate Dollar Value of Shares that May Yet be Purchased Under the Plans(2)
July 1 - July 31, 2017	110,375	$	33.11	107,992	$	26,938,775
August 1 - August 31, 2017	172,162	$	37.53	85,066	$	23,819,702
September 1 - September 30, 2017	95,897	$	34.55	90,865	$	20,677,472
Total	378,434			283,923

(1) Includes shares surrendered by employees to us to satisfy tax withholding obligations that arose upon vesting of restricted stock units granted pursuant to approved plans.

(2) We repurchased a total of approximately $9.8 million of our outstanding common stock during the three months ended September 30, 2017.

As of September 30, 2017 we had approximately $20.7 million remaining for repurchases under our stock repurchase program. Stock repurchases under the program are primarily intended to offset the dilutive effect of share-based employee incentive compensation. The purchases were funded from existing cash and cash equivalents balances.

Our stock repurchases and dividends are subject to certain restrictions under the terms of our credit facility. For more information about our credit facility and our stock repurchases, refer to Notes 8 and 9 in Part II, Item 8 of our 2016 Form 10-K.

Defaults Upon Senior Securities

Not applicable.

Mine Safety Disclosures

Not applicable.

Other Information

Not applicable.

Exhibits

Incorporated herein by reference is a list of the exhibits contained in the Exhibit Index below.

35

EXHIBITS

EXHIBIT INDEX

		Incorporated by Reference
Exhibit No.	Exhibit	Form	File No.	Exhibit	Filing Date	Filed Herewith
3.1	Certificate of Correction of Amended and Restated Certificate of Incorporation of TriNet Group, Inc.					X
31.1	Certification of Principal Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002					X
31.2	Certification of Principal Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002					X
32.1*	Certification of Principal Executive Officer and Principal Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Linkbase Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document

* Document has been furnished, is deemed not filed and is not to be incorporated by reference into any of TriNet Group, Inc.’s filings under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, irrespective of any general incorporation language contained in any such filing.

36

SIGNATURES

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	TRINET GROUP, INC.
Date: November 2, 2017		By:	/s/ Burton M. Goldfield
			Burton M. Goldfield
			Chief Executive Officer
Date: November 2, 2017		By:	/s/ Richard Beckert
			Richard Beckert
			Chief Financial Officer
Date: November 2, 2017		By:	/s/ Michael P. Murphy
			Michael P. Murphy
			Chief Accounting Officer

37

EX-3.1

Exhibit 3.1

CERTIFICATE OF CORRECTION

OF

AMENDED AND RESTATED CERTIFICATE OF INCORPORATION

OF

TRINET GROUP, INC.

TriNet Group, Inc. (the “Corporation”), a corporation organized and existing under and by virtue of the General Corporation Law of the State of Delaware.

DOES HEREBY CERTIFY:

FIRST: The name of the Corporation is TriNet Group, Inc.

SECOND: That an Amended and Restated Certificate of Incorporation (the “Certificate of Incorporation”) was filed with the Secretary of State of the State of Delaware on March 31, 2014, and that said Certificate of Incorporation requires correction as permitted by subsection (f) of Section 103 of the General Corporation Law of the State of Delaware.

THIRD: The inaccuracy or defect of the Certificate of Incorporation to be corrected hereby is that the second sentence of Section A.3 of Article V erroneously described the circumstances in which directors may be removed, in contradiction to the first sentence of Section A.3 of Article V.

FOURTH: The Certificate of Incorporation is hereby corrected such that the second sentence of Section A.3 of Article V shall read in its entirety as follows:

“Subject to any limitations imposed by applicable law, any individual director or directors may be removed with cause by the affirmative vote of the holders of 66 2/3% of the voting power of all then outstanding shares of capital stock of the Company entitled to vote generally at an election of directors.”

FIFTH: All other provisions of the Certificate of Incorporation remain unchanged.

[Remainder of Page Intentionally Left Blank]

IN WITNESS WHEREOF, the Corporation has caused this Certificate of Correction to be executed by its duly authorized officer on this 30th day of October, 2017.

TRINET GROUP, INC.

By:     /s/ Brady Mickelsen    
Name:    Brady Mickelsen

Title: Chief Legal Officer

2

EX-31.1

Exhibit 31.1

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Burton M. Goldfield, certify that:

1. I have reviewed this quarterly report on Form 10-Q of TriNet Group, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 2, 2017

/s/ Burton M. Goldfield

Burton M. Goldfield

President and Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Richard Beckert, certify that:

1. I have reviewed this quarterly report on Form 10-Q of TriNet Group, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 2, 2017

/s/ Richard Beckert

Richard Beckert

Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 906

OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of TriNet Group, Inc., a Delaware corporation (the “Company”), on Form 10-Q for the period ending September 30, 2017 as filed with the U.S. Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned officers of the Company does hereby certify, pursuant to 18 U.S.C. § 1350 (section 906 of the Sarbanes-Oxley Act of 2002), that:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

The foregoing certification (i) is given to such officers’ knowledge, based upon such officers’ investigation as such officers reasonably deem appropriate; and (ii) is being furnished solely pursuant to 18 U.S.C. § 1350 (section 906 of the Sarbanes-Oxley Act of 2002) and is not being filed as part of the Report or as a separate disclosure document and is not to be incorporated by reference into any filing of the Company under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended (whether made before or after the date of the Report), irrespective of any general incorporation language contained in such filing.

Date: November 2, 2017	/s/ Burton M. Goldfield
	Burton M. Goldfield
	Chief Executive Officer
Date: November 2, 2017	/s/ Richard Beckert
	Richard Beckert
	Chief Financial Officer

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Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Oct. 24, 2017
Document And Entity Information [Abstract]
Entity Registrant Name	TRINET GROUP INC
Trading Symbol	TNET
Entity Central Index Key	0000937098
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		69,485,274

XML

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 263,527	$ 184,004
Restricted cash and cash equivalents	15,445	14,569
Prepaid income taxes	0	42,381
Prepaid expenses	11,013	10,784
Other current assets	2,360	2,145
Worksite employee related assets	941,213	1,281,471
Total current assets	1,233,558	1,535,354
Workers' compensation collateral receivable	39,931	31,883
Restricted cash and available for sale investments	160,207	130,501
Property and equipment, net	68,470	58,622
Goodwill	289,207	289,207
Other intangible assets, net	27,108	31,074
Other assets	18,444	18,502
Total assets	1,836,925	2,095,143
Current liabilities:
Accounts payable	28,995	22,541
Accrued corporate wages	31,814	30,937
Notes and capital leases payable, net	36,718	36,559
Other current liabilities	14,321	12,551
Worksite employee related liabilities	934,868	1,275,995
Total current liabilities	1,046,716	1,378,583
Notes and capital leases payable, net, noncurrent	394,972	422,495
Workers' compensation loss reserves (net of collateral paid of $20,307 and $22,377 at September 30, 2017 and December 31, 2016, respectively)	157,999	159,301
Deferred income taxes	90,845	92,373
Other liabilities	14,534	7,801
Total liabilities	1,705,066	2,060,553
Commitments and contingencies (see Note 9)
Stockholders’ equity:
Preferred stock ($0.000025 par value per share; 20,000,000 shares authorized; no shares issued and outstanding at September 30, 2017 and December 31, 2016)	0	0
Common stock and additional paid-in capital ($0.000025 par value per share; 750,000,000 shares authorized; 69,536,268 and 69,015,690 shares issued and outstanding at September 30, 2017 and December 31, 2016, respectively)	567,971	535,132
Accumulated deficit	(435,739)	(499,938)
Accumulated other comprehensive loss	(373)	(604)
Total stockholders’ equity	131,859	34,590
Total liabilities and stockholders’ equity	$ 1,836,925	$ 2,095,143

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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Preferred stock, per share stated value	$ 0.000025	$ 0.000025
Preferred stock, shares authorized	20,000,000	20,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, per share stated value	$ 0.000025	$ 0.000025
Common stock, shares authorized	750,000,000	750,000,000
Common stock, shares issued	69,536,268	69,015,690
Common stock, shares outstanding	69,536,268	69,015,690
Collateral paid to insurance carriers, net of workers' compensation loss reserves, noncurrent	$ 20,307	$ 22,377

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CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Statement [Abstract]
Professional service revenues	$ 112,530	$ 110,493	$ 341,293	$ 332,489
Insurance service revenues	706,763	659,964	2,086,151	1,916,753
Total revenues	819,293	770,457	2,427,444	2,249,242
Costs and operating expenses:
Insurance costs	613,397	609,422	1,821,574	1,775,784
Cost of providing services (exclusive of depreciation and amortization of intangible assets)	49,989	50,142	157,264	139,881
Sales and marketing	44,407	41,470	139,538	133,978
General and administrative	28,505	22,477	82,031	69,078
Systems development and programming costs	11,182	8,124	33,637	20,970
Amortization of intangible assets	1,300	4,662	3,966	14,647
Depreciation	7,754	5,188	20,353	13,663
Total costs and operating expenses	756,534	741,485	2,258,363	2,168,001
Operating income	62,759	28,972	169,081	81,241
Other income (expense):
Interest expense and bank fees	(5,425)	(5,597)	(15,030)	(15,677)
Other, net	770	313	1,192	434
Income before provision for income taxes	58,104	23,688	155,243	65,998
Income tax expense	15,268	9,107	43,719	27,558
Net income	42,836	14,581	111,524	38,440
Other comprehensive income, net of tax	151	(125)	231	300
Comprehensive income	$ 42,987	$ 14,456	$ 111,755	$ 38,740
Net income per share:
Basic (in dollars per share)	$ 0.62	$ 0.21	$ 1.62	$ 0.55
Diluted (in dollars per share)	$ 0.60	$ 0.20	$ 1.57	$ 0.53
Weighted average shares:
Basic (in shares)	69,498,218	70,187,989	69,016,054	70,478,266
Diluted (in shares)	71,499,591	71,964,603	71,138,743	72,126,060

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Operating activities
Net income	$ 111,524	$ 38,440
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	26,177	27,810
Stock-based compensation	21,406	20,169
Changes in operating assets and liabilities:
Restricted cash and cash equivalents	(45,570)	(31,409)
Prepaid income taxes	42,448	386
Prepaid expenses and other current assets	(961)	(5,253)
Workers' compensation collateral receivable	(8,048)	(11,374)
Other assets	925	438
Accounts payable	5,505	4,538
Accrued corporate wages and other current liabilities	2,331	4,548
Workers' compensation loss reserves and other non-current liabilities	3,574	33,510
Worksite employee related assets	340,767	525,841
Worksite employee related liabilities	(341,127)	(526,945)
Net cash provided by operating activities	158,951	80,699
Investing activities
Acquisitions of businesses	0	(300)
Purchases of marketable securities	0	(14,959)
Proceeds from maturity of marketable securities	14,447	25,790
Acquisitions of property and equipment	(29,210)	(27,942)
Net cash used in investing activities	(14,763)	(17,411)
Financing activities
Repurchase of common stock	(39,347)	(43,747)
Proceeds from issuance of common stock on exercised options	8,678	3,584
Proceeds from issuance of common stock on employee stock purchase plan	2,441	2,304
Awards effectively repurchased for required employee withholding taxes	(8,100)	(2,672)
Proceeds from issuance of notes payable	0	57,978
Payments for extinguishment of debt	0	(57,563)
Repayment of notes and capital leases payable	(28,735)	(27,506)
Payment of debt issuance costs	0	(1,376)
Net cash used in financing activities	(65,063)	(68,998)
Effect of exchange rate changes on cash and cash equivalents	398	90
Net increase in cash and cash equivalents	79,523	(5,620)
Cash and cash equivalents at beginning of period	184,004	166,178
Cash and cash equivalents at end of period	263,527	160,558
Supplemental disclosures of cash flow information
Interest paid	12,186	11,651
Income taxes paid (refunded), net	(138)	27,650
Supplemental schedule of noncash investing and financing activities
Payable for purchase of property and equipment	$ 2,450	$ 1,363

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Description of Business and Significant Accounting Policies

9 Months Ended

Sep. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Description of Business and Significant Accounting Policies

DESCRIPTION OF BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES

Description of Business

TriNet Group Inc. (TriNet, or the Company, we, our and us), a professional employer organization (PEO) founded in 1988, provides comprehensive human resources (HR) solutions for small to midsize businesses (SMBs) under a co-employment model. These HR solutions include bundled services, such as multi-state payroll processing and tax administration, employee benefits programs, including health insurance and retirement plans, workers' compensation insurance and claims management, employment and benefit law compliance, and other services. Through the co-employment relationship, we are the employer of record for most administrative and regulatory purposes, including:

• compensation through wages and salaries,

• employer payroll-related taxes payment,

• employee payroll-related taxes withholding and payment,

• employee benefit programs including health and life insurance, and others, and

• workers' compensation coverage.

Our clients are responsible for the day-to-day job responsibilities of the worksite employees (WSEs).

We operate in one reportable segment. All of our service revenues are generated from external clients. Less than 1% of revenue is generated outside of the U.S.

Basis of Presentation

These unaudited condensed consolidated financial statements (Financial Statements) and accompanying notes have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) for interim financial reporting and the instructions to Form 10-Q and Rule 10-01 of Regulation S-X of the Rules and Regulations of the Securities and Exchange Commission (SEC). Certain information and note disclosures included in the annual financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. In the opinion of management, the condensed consolidated financial statements reflect all adjustments, which are normal and recurring in nature, necessary for fair financial statement presentation. The results of operations for the third quarter of 2017 are not necessarily indicative of the operating results anticipated for the full year. These Financial Statements should be read in conjunction with the audited Consolidated Financial Statements included in Part II, Item 8 of our Annual Report on Form 10-K for the year ended December 31, 2016 (2016 Form 10-K).

Use of Estimates

The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect certain reported amounts and related disclosures. Significant estimates include:

• liability for unpaid losses and loss adjustment expenses (loss reserves) related to workers' compensation and workers' compensation collateral receivable,

• health insurance loss reserves,

• liability for insurance premiums payable,

• impairments of goodwill and other intangible assets,

• income tax assets and liabilities, and

• liability for legal contingencies.

These estimates are based on historical experience and on various other assumptions that we believe to be reasonable from the facts available to us. Some of the assumptions are highly uncertain at the time of estimation. To the extent actual experience differs from the assumptions used, our consolidated financial statements could be materially affected.

Recent Accounting Pronouncements

Recently adopted accounting guidance

Share-based payments - In March 2016, the FASB issued ASU 2016-09-Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting, as part of the Simplification Initiative to simplify certain aspects of the accounting for share-based payment transactions to employees. The new standard requires excess tax benefits and tax deficiencies to be recorded in the statements of income as a component of the provision for income taxes when stock awards vest or are settled. In addition, it eliminates the requirement to reclassify cash flows related to excess tax benefits from operating activities to financing activities on the condensed consolidated statements of cash flows. The standard also provides an accounting policy election to account for forfeitures as they occur, allows us to withhold more of an employee’s vesting shares for tax withholding purposes without triggering liability accounting, and clarifies that all cash payments made to tax authorities on an employee’s behalf for withheld shares should be presented as a financing activity on our cash flows statement. The new standard was effective for us beginning January 1, 2017.

Upon adoption, excess tax benefits or deficiencies from share-based award activity were reflected in the condensed consolidated statements of income as a component of the provision for income taxes, whereas they previously were recognized in equity. We also elected to account for forfeitures as they occur, rather than estimate expected forfeitures. The adoption of ASU 2016-09 resulted in a net cumulative-effect adjustment of $0.3 million, reflected as an increase to retained earnings as of January 1, 2017, mostly related to the recognition of the previously unrecognized excess tax benefits using the modified retrospective method. The previously unrecognized excess tax effects were recorded as an increase to deferred tax assets.

We adopted the aspects of the standard affecting the cash flow presentation retrospectively, and accordingly, to conform to the current year presentation, we reclassified$2.6 million of tax deficiencies under financing activities to operating activities for the period ended September 30, 2016, on our condensed consolidated statements of cash flows. The presentation requirements for cash flows related to employee taxes paid for withheld shares had no impact to any of the periods presented on our condensed consolidated statements of cash flows since such cash flows have historically been presented as a financing activity.

Recently issued accounting pronouncements

Lease arrangements -In February 2016, the FASB issued ASU 2016-02-Leases. The amendment requires that lease arrangements longer than 12 months result in an entity recognizing lease assets and lease liabilities. Most significant impact is on those leases classified as operating leases under previous U.S. GAAP. Under the new standard, disclosures are required to meet the objective of enabling users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases.

The amendment is effective for annual reporting periods, and interim periods within those years beginning after December 15, 2018. We currently anticipate adoption of the new standard effective January 1, 2019.

We anticipate this standard will have a material impact on our condensed consolidated financial statements. While we are continuing to assess all potential impacts of the standard, we currently believe the most significant impact relates to our accounting for equipment, office and data-center operating leases.

Financial Instruments - In January 2016, the FASB issued ASU 2016-01-Recognition and Measurement of Financial Assets and Financial Liabilities. The amendment addresses various aspects of the recognition, measurement, presentation, and disclosure for financial instruments. The amendment is effective for annual reporting periods, and interim periods within those years beginning after December 15, 2017. Early adoption by public entities is permitted only for certain provisions. We are currently in the process of evaluating the impact of the adoption of this standard on our condensed consolidated financial statements.

Revenue Recognition - In May 2014, the FASB issued ASU 2014-09-Revenue from Contracts with Customers, which will replace most existing revenue recognition guidance under GAAP. The core principle of the guidance is that an entity should recognize revenue for the transfer of promised goods or services to customers that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard provides a five-step analysis of transactions to determine when and how revenue is recognized. In July 2015, the FASB deferred the effective date to annual reporting periods, and interim periods within those years, beginning after December 15, 2017. Early adoption at the original effective date of December 15, 2016 is permitted. The amendments may be applied retrospectively or as a cumulative-effect adjustment as of the date of adoption. In March, April and May 2016, the FASB issued ASU 2016-08 Principal versus Agent Considerations (Reporting Revenue Gross versus Net), ASU 2016-10 Identifying Performance Obligations and Licensing, ASU 2016-12 Narrow-Scope Improvements and Practical Expedients and ASU 2016-20 Technical Corrections and Improvements, respectively, providing further clarification to be considered when implementing ASU 2014-09. The guidance permits two methods of adoption: retrospectively to each prior reporting period presented (full retrospective method), or retrospectively with the cumulative effect of initially applying the guidance recognized at the date of initial application (the modified retrospective method). We currently anticipate adopting the new standard effective beginning January 1, 2018 using the modified retrospective method.

Under the modified retrospective method, the new standard will be applied to all contracts initiated on or after the effective date. For contracts with remaining obligations as of the effective date, opening retained earnings will be adjusted for the cumulative effect of the change to the new standard as of the effective date.

We anticipate this standard will have a material impact on our condensed consolidated financial statements. While we do not anticipate this standard will result in a material adjustment to beginning balance retained earnings, we do anticipate this standard will have a material impact on our condensed consolidated financial statements on a prospective basis. Specifically, we currently believe the adoption will have a material impact on our accounting for sales commission expense, deferred revenue, income tax provision and deferred taxes. We anticipate that certain client acquisition costs will be deferred over the expected client tenure. We expect our professional service revenues and insurance service revenues will remain substantially unchanged. The actual revenue recognition treatment required under the standard will be dependent on contract specific terms, and may vary in some instances from recognition at the time of billing.

At the date of adoption, we expect to record a net cumulative effect adjustment in retained earnings associated with unamortized deferred revenue and sales commission related to any open customer contracts as of adoption date.

Statement of Cash Flows - In November and August 2016, the FASB issued (ASU) 2016-18 - Statement of Cash Flows (Topic 230): Restricted Cash and 2016-15-Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. The new guidance is intended to reduce diversity in practice in how restricted cash and other certain transactions are classified in the statement of cash flows. The amendments are effective for annual reporting periods, and interim periods within those years, beginning after December 15, 2017. Early adoption is permitted, provided that all of the amendments are adopted in the same period. The guidance requires application using a retrospective transition method.

As of September 30, 2017 and December 31, 2016, we had total restricted cash, restricted cash equivalents and payroll funds collected of $748.5 million and $1.0 billion, respectively. Currently, changes in these balances are presented as operating cash activities in the condensed consolidated statements of cash flows. Under the new guidance, changes in these amounts will be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the condensed consolidated statements of cash flows.

Although there are several other new accounting pronouncements issued or proposed by the FASB, which we have adopted or will adopt, as applicable, we do not believe any of these other accounting pronouncements have had or will have a material impact on its consolidated financial position, operating results or statements of cash flows.

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Cash, Cash Equivalents and Investments

9 Months Ended

Sep. 30, 2017

Cash and Cash Equivalents [Abstract]

Cash, Cash Equivalents and Investments

CASH, CASH EQUIVALENTS AND INVESTMENTS

Under the terms of the agreements with certain of our workers' compensation and health benefit insurance carriers, we are required to maintain collateral in trust accounts for the benefit of specified insurance carriers and to reimburse the carriers’ claim payments within our deductible layer. We invest a portion of the collateral amounts in marketable securities. We report the current portion of these trust accounts as restricted cash and cash equivalents in WSE related assets, and the long-term portion as restricted cash, cash equivalents and investments on the condensed consolidated balance sheets.

We require our clients to prefund their payroll and related taxes and other withholding liabilities before payroll is processed or due for payment. These amounts that are prefunded by clients are included in WSE related assets as payroll funds collected and are designated to pay pending payrolls and other WSE related liabilities.

Our total corporate and WSE related cash, cash equivalents and investments are summarized below:

	September 30, 2017								December 31, 2016
(in thousands)	Cash and cash equivalents		Available for sale marketable securities		Certificate of deposits		Total		Cash and cash equivalents		Available for sale marketable securities		Certificate of deposits		Total
Cash and cash equivalents	$	263,527	$	—	$	—	$	263,527	$	184,004	$	—	$	—	$	184,004
Restricted cash and cash equivalents	15,445		—		—		15,445		14,569		—		—		14,569
Restricted cash, cash equivalents and investments, noncurrent
Collateral for workers' compensation claims	123,366		36,841		—		160,207		78,672		51,829		—		130,501
Worksite employee related assets
Restricted cash, cash equivalents and investments, current
Collateral for health benefits claims	68,907		—		—		68,907		65,022		—		—		65,022
Collateral for workers' compensation claims	85,284		508		—		85,792		64,773		—		—		64,773
Collateral to secure standby letter of credit	—		—		2,324		2,324		—		—		2,320		2,320
Total WSE related restricted cash, cash equivalents and investments, current	154,191		508		2,324		157,023		129,795		—		2,320		132,115
Payroll funds collected	455,494		—		—		455,494		825,958		—		—		825,958
Total	$	1,012,023	$	37,349	$	2,324	$	1,051,696	$	1,232,998	$	51,829	$	2,320	$	1,287,147

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Worksite Employee Related Assets and Liabilities

9 Months Ended

Sep. 30, 2017

Other Industries [Abstract]

Worksite Employee Related Assets and Liabilities

WORKSITE EMPLOYEE RELATED ASSETS AND LIABILITIES

WSE related assets and WSE related liabilities are intended to be reviewed together when considering the financial position of the Company. Our clients direct the price and service specifications for payroll and payroll taxes and as a result, we are not the primary obligor for payroll and payroll tax payments and therefore record these amounts net in our statements of income and comprehensive income. However, we record without offset, accrued wages and payroll tax liabilities for WSEs in WSE related liabilities with the related payroll funds collected and unbilled revenues in WSE related assets. We have classified these assets and liabilities and other service related amounts collectively as WSE related, to present a clearer picture of the inter-relationship of the balances and distinguish these from our other corporate assets and liabilities.

In addition to unbilled revenues, accrued wages and payroll tax liabilities, other significant balances included in the WSE related assets and liabilities include:

• Payroll funds collected, which represents cash collected from clients in advance to fund payroll and payroll taxes, and other payroll related liabilities;

• Other payroll assets, which primarily include payroll tax receivables;

• Client deposits, which represents indemnity guarantee payments received from clients and collections from clients in excess of payroll and other payroll related liabilities;

• Other payroll withholdings, which primarily includes withholdings under 401(k) plans and flexible benefit plans.

(in thousands)	September 30, 2017		December 31, 2016
Worksite employee related assets:
Restricted cash, cash equivalents and investments	$	157,023	$	132,115
Payroll funds collected	455,494		825,958
Unbilled revenue (net of advance collections of $10,038    and $8,602 at September 30, 2017 and December 31, 2016,    respectively)	284,136		293,192
Accounts receivable (net of allowance for doubtful accounts of    $304 and $292 at September 30, 2017 and December 31, 2016,    respectively)	5,912		4,854
Prepaid insurance premiums	27,200		12,805
Workers' compensation collateral receivable	1,417		2,136
Other payroll assets	10,031		10,411
Total worksite employee related assets	$	941,213	$	1,281,471
Worksite employee related liabilities:
Accrued wages	$	274,123	$	272,966
Client deposits	28,096		56,182
Payroll tax liabilities	368,207		692,460
Unpaid losses and loss adjustment expenses (less than 1 year):
Health benefits loss reserves	129,681		129,430
Workers' compensation loss reserves (net of collateral paid of $7,105 and $9,234 at September 30, 2017 and December 31, 2016, respectively)	63,683		63,702
Insurance premiums and other payables	25,654		14,223
Other payroll withholdings	45,424		47,032
Total worksite employee related liabilities	$	934,868	$	1,275,995

Included in the payroll tax liabilities and insurance premiums and other payables were amounts relating to approximately 2,700 and 2,600 corporate employees at September 30, 2017 and December 31, 2016, respectively.

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Workers Compensation Assets and Liabilities

9 Months Ended

Sep. 30, 2017

Insurance [Abstract]

Workers Compensation Assets and Liabilities

WORKERS' COMPENSATION LOSS RESERVES

The following table summarizes the workers’ compensation loss reserve activity for the three and nine months ended September 30, 2017 and 2016:

	Three Months Ended September 30,						Nine Months Ended September 30,
(in thousands)	2017			2016			2017			2016
Total loss reserves, beginning of period	$	254,684		$	214,711		$	254,614		$	190,102
Incurred
Current year	22,618			26,717			69,745			78,063
Prior years	(4,294		)	4,947			(2,797		)	12,951
Total incurred	18,324			31,664			66,948			91,014
Paid
Current year	(3,464		)	(6,738		)	(9,101		)	(9,016		)
Prior years	(20,450		)	(17,130		)	(63,367		)	(49,593		)
Total paid	(23,914		)	(23,868		)	(72,468		)	(58,609		)
Total loss reserves, end of period	$	249,094		$	222,507		$	249,094		$	222,507

The following summarizes workers' compensation liabilities on the condensed consolidated balance sheets:

(in thousands)	September 30, 2017			December 31, 2016
Total loss reserves, end of period	$	249,094		$	254,614
Collateral paid to carriers and offset against loss reserves	(27,412		)	(31,611		)
Total loss reserves, net of carrier collateral offset	$	221,682		$	223,003
Payable in less than 1 year (1)  (net of collateral paid to carriers of $7,105 and $9,234 at September 30, 2017 and December 31, 2016, respectively)	$	63,683		$	63,702
Payable in more than 1 year (net of collateral paid to carriers of $20,307 and $22,377 at September 30, 2017 and December 31, 2016, respectively)	157,999			159,301
Total loss reserves, net of carrier collateral offset	$	221,682		$	223,003

(1) Included in WSE related liabilities within Note 3 to these condensed consolidated financial statements.

Incurred claims related to prior years represent changes in estimates for ultimate losses on workers' compensation claims. For the three and the nine months ended September 30, 2017, the change was primarily due to favorable claims development associated with our non-office WSEs in recent accident years.

As of September 30, 2017 and December 31, 2016, we had $68.8 million and $65.6 million, respectively, of collateral held by insurance carriers of which $27.4 million and $31.6 million, respectively, was offset against workers' compensation loss reserves as the agreements permit and are net settled of insurance obligations against collateral held. Collateral paid to each carrier for a policy year in excess of our loss reserves is recorded as workers' compensation collateral receivable.

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Financial Instruments and Fair Value Measurements

9 Months Ended

Sep. 30, 2017

Investments, Debt and Equity Securities [Abstract]

Financial Instruments and Fair Value Measurements

FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS

Cash, Cash equivalents and Restricted Investments

We classify our cash, cash equivalents and restricted investments in marketable securities within Level I in the fair value hierarchy because we use quoted market prices to determine the fair value. We classify our certificates of deposit within Level II in the fair value hierarchy as we use a market approach that compares fair values on certificates with similar maturities. We have no available for sale securities included in Level III as of September 30, 2017 and December 31, 2016. There was no transfer of any assets and liabilities between Levels during the nine months ended September 30, 2017 or the year ended December 31, 2016.

The following table summarizes our investments by significant categories and fair value measurements on a recurring basis as of September 30, 2017 and December 31, 2016.

(in thousands)	Maturity  (in years)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
September 30, 2017
Level 1:
Investments:
U.S. treasuries	< 3	$	36,916	$	—	$	(75	)	$	36,841
Mutual funds	N/A	500		8		—			508
Total investments		$	37,416	$	8	$	(75	)	$	37,349
Level 2:
Certificates of deposit	< 1	$	2,324	$	—	$	—		$	2,324
Total		$	39,740	$	8	$	(75	)	$	39,673
December 31, 2016
Level 1:
Investments:
U.S. treasuries	< 3	$	51,376	$	25	$	(77	)	$	51,324
Mutual funds	N/A	500		5		—			505
Total investments		$	51,876	$	30	$	(77	)	$	51,829
Level 2:
Certificates of deposit	< 1	$	2,320	$	—	$	—		$	2,320
Total		$	54,196	$	30	$	(77	)	$	54,149

There were no realized gains or losses for the nine months ended September 30, 2017 and 2016. We had $0.1 million gross unrealized losses in our U.S. Treasury securities as of September 30, 2017 and December 31, 2016. The fair value of these securities in an unrealized loss position represented 100% and 58% of the total fair value of all U.S. Treasury securities as of September 30, 2017 and December 31, 2016, respectively.

Unrealized losses are principally caused by changes in interest rates. In analyzing an issuer's financial condition, we consider whether the securities are issued by the federal government or its agencies, whether downgrades by bond rating agencies have occurred, and industry analysts' reports. As we have the ability and intent to hold these available for sale marketable securities until maturity, or for the foreseeable future, no decline was deemed to be other-than-temporary.

Notes Payable

The carrying value of our notes payable at September 30, 2017 and December 31, 2016 was $434.3 million and $462.9 million, respectively. The estimated fair values of our notes payable at September 30, 2017 and December 31, 2016 were $437.7 million and $462.9 million, respectively. These valuations are considered Level II in the hierarchy for fair value measurement and are based on quoted market prices.

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Stockholders' Equity

9 Months Ended

Sep. 30, 2017

Equity [Abstract]

Stockholders' Equity

STOCKHOLDERS’ EQUITY

Equity-Based Incentive Plans

Equity-based incentive plans include stock options, restricted stock units (time-based and performance-based) and other stock awards. The number of shares available for grant under these plans as of September 30, 2017 was 8.9 million.

The following table summarizes stock option activity under our equity-based plans for the nine months ended September 30, 2017:

	Number of Shares
Balance at December 31, 2016	2,815,224
Granted	—
Exercised	(1,280,726	)
Cancelled	(12,297	)
Forfeited	(57,540	)
Expired	—
Balance at September 30, 2017	1,464,661
Exercisable at September 30, 2017	1,192,694

The aggregate intrinsic value of stock options outstanding was $31.4 million and $46.2 million as of September 30, 2017 and December 31, 2016, respectively.

The following table summarizes restricted stock unit (RSU) and performance-based restricted stock unit (PSU) activity under our equity-based plans for the nine months ended September 30, 2017:

	RSUs				PSUs
	Number of Units		Weighted-Average Grant Date Fair Value		Number of Units		Weighted-Average Grant Date Fair Value
Nonvested at December 31, 2016	2,323,051		$	20.32	149,412		$	33.51
Granted	1,119,525		28.68		330,674		29.69
Vested	(795,856	)	20.41		(7,518	)	33.51
Forfeited	(232,727	)	23.38		(18,894	)	33.51
Nonvested at September 30, 2017	2,413,993		$	23.87	453,674		$	30.72

Stock-Based Compensation

Stock-based compensation expense is measured based on the fair value of the stock option on the grant date and recognized over the requisite service period for each separately vesting portion of the stock option award. Stock-based compensation expense and other disclosures for stock-based awards made to our employees pursuant to the equity plans was as follows: 

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2017		2016		2017		2016
Cost of providing services	$	1,845	$	1,605	$	5,488	$	5,044
Sales and marketing	1,524		1,491		4,447		5,119
General and administrative	3,259		2,544		8,294		8,161
Systems development and programming costs	1,072		624		3,177		1,845
Total stock-based compensation expense	$	7,700	$	6,264	$	21,406	$	20,169
Income tax benefit related to stock-based compensation expense	$	2,813	$	2,267	$	7,621	$	7,095
Tax benefit realized from stock options exercised and similar awards	$	5,942	$	1,721	$	21,976	$	4,136

Stock Repurchases

The board of directors authorizes repurchases through an ongoing program initiated in May 2014. During the nine months ended September 30, 2017, we repurchased 1.4 million shares of common stock for $39.3 million. As of September 30, 2017, $20.7 million remained available for further repurchases of our common stock under our ongoing stock repurchase program.

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Earnings Per Share (EPS)

9 Months Ended

Sep. 30, 2017

Earnings Per Share [Abstract]

Earnings Per Share (EPS)

EARNINGS PER SHARE (EPS)

The following table presents the computation of our basic and diluted EPS attributable to our common stock:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands, except per share data)	2017		2016		2017		2016
Net income	$	42,836	$	14,581	$	111,524	$	38,440
Weighted average shares of common stock outstanding	69,498		70,188		69,016		70,478
Basic EPS	$	0.62	$	0.21	$	1.62	$	0.55
Net income	$	42,836	$	14,581	$	111,524	$	38,440
Weighted average shares of common stock	69,498		70,188		69,016		70,478
Dilutive effect of stock options and restricted stock units	2,002		1,777		2,123		1,648
Weighted average shares of common stock outstanding	71,500		71,965		71,139		72,126
Diluted EPS	$	0.60	$	0.20	$	1.57	$	0.53
Common stock equivalents excluded from income per diluted share because of their anti-dilutive effect	482		817		1,856		912

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Income Taxes

9 Months Ended

Sep. 30, 2017

Income Tax Disclosure [Abstract]

Income Taxes

INCOME TAXES

Our effective income tax rate was 26.3% and 38.4% for the three months ended September 30, 2017 and 2016, respectively, and 28.2% and 41.8% for the nine months ended September 30, 2017 and 2016, respectively. These decreases are primarily due to a discrete tax benefit recognized upon adoption of ASU 2016-09, a tax benefit resulting from qualified production activities deduction for certain software offerings, a tax benefit from an increase in excludable income for state tax purposes which is partially offset by a discrete charge due to changes in uncertain tax positions, and a tax benefit in non-deductible expenses due to the abatement of penalties previously assessed by the Internal Revenue Service (IRS). The remaining decrease is attributable to tax credits and disqualifying dispositions of previously nondeductible stock based compensation.

During the nine months ended September 30, 2017, our unrecognized tax benefits increased from $0.9 million to $4.4 million. Of the $4.4 million, $2.5 million would affect our tax expense, if recognized. Included in the $2.5 million is $0.2 million for interest and $0.2 million for penalties. Our unrecognized tax benefits are not expected to change significantly during the next 12 months.

We are subject to tax in U.S. federal and various state and local jurisdictions, as well as Canada. We are not subject to any material income tax examinations in federal or state jurisdictions for tax years prior to January 1, 2011. We previously paid Notices of Proposed Assessments disallowing employment tax credits totaling $10.5 million, plus interest of $4.0 million in connection with an IRS examination of Gevity HR, Inc. and its subsidiaries, which were acquired by TriNet in June 2009. This issue is being resolved through litigation. With regard to these employment tax credits, we believe it is more likely than not that we will prevail and realize our receivable included in other noncurrent assets without a charge to our statement of income. Therefore, no reserve has been recognized related to this matter.

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Commitments and Contingencies

9 Months Ended

Sep. 30, 2017

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

COMMITMENTS AND CONTINGENCIES

Lease Commitments

We lease office facilities, including our headquarters and other facilities, and equipment under non-cancelable operating leases. For detail of these commitments refer to Note 13 in Part II, Item 8 in our 2016 Form 10-K.

In July 2017, we entered into an agreement to lease additional office space starting February 2018 for a total commitment of approximately $32.4 million over 10 years.

Credit Facilities

We maintain a $75.0 million revolving credit facility which includes capacity for a $40.0 million letter of credit facility and a $10.0 million swingline facility. Letters of credit issued pursuant to the revolving credit facility reduce the amount available for borrowing under the revolving credit facility. The total unused portion of the revolving credit facility was $59.5 million as of September 30, 2017.

The terms of the credit agreement governing the revolving credit facility require us to maintain certain financial ratios at each quarter end. We were in compliance with these covenants at September 30, 2017.

We also have a $5.0 million line of credit facility to secure standby letters of credit related to our workers' compensation obligations. At September 30, 2017, the total unused portion of the credit facility was $2.7 million.

Standby Letters of Credit

We have two unused standby letters of credit totaling $17.8 million provided as collateral for our workers’ compensation obligations. At September 30, 2017, the facilities were not drawn down.

Contingencies    

In August 2015, Howard Welgus, a purported stockholder, filed a putative securities class action lawsuit, Welgus v. TriNet Group, Inc. et. al., under the Securities Exchange Act of 1934 in the United States District Court (the Court) for the Northern District of California. The complaint was later amended in April 2016. The amended complaint generally alleges that TriNet and the other defendants caused damage to purchasers of our stock by misrepresenting and/or failing to disclose facts generally pertaining to alleged trends affecting health insurance and workers' compensation claims. The other defendants include certain of our officers and directors, General Atlantic, LLC, a former significant shareholder, and the underwriters of our IPO. The court heard arguments on our motion to dismiss in September 2017 and took the matter under submission. We are unable to reasonably estimate the possible loss or range of losses, if any, arising from this litigation.

We are and, from time to time, have been and may in the future become involved in various litigation matters, legal proceedings and claims arising in the ordinary course of our business, including disputes with our clients or various class action, collective action, representative action and other proceedings arising from the nature of our co-employment relationship with our clients and WSEs in which we are named as a defendant. In addition, due to the nature of our co-employment relationship with our clients and WSEs, we could be subject to liability for federal and state law violations, even if we do not participate in such violations. While our agreements with our clients contain indemnification provisions related to the conduct of our clients, we may not be able to avail ourselves of such provisions in every instance. We have accrued our current best estimates of probable losses with respect to these matters which are individually and in aggregate immaterial to our condensed consolidated financial statements.

While the outcome of the matters described above cannot be predicted with certainty, management currently does not believe that any such claims or proceedings or the above mentioned securities class action will have a materially adverse effect on our consolidated financial position, results of operations or cash flows. However, the unfavorable resolution of any particular matter or our reassessment of our exposure for any of the above matters based on additional information obtained in the future could have a material impact on our consolidated financial position, results of operations or cash flows.

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Description of Business and Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Segment Information

We operate in one reportable segment. All of our service revenues are generated from external clients. Less than 1% of revenue is generated outside of the U.S.

Basis of Presentation

Basis of Presentation

These unaudited condensed consolidated financial statements (Financial Statements) and accompanying notes have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) for interim financial reporting and the instructions to Form 10-Q and Rule 10-01 of Regulation S-X of the Rules and Regulations of the Securities and Exchange Commission (SEC). Certain information and note disclosures included in the annual financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. In the opinion of management, the condensed consolidated financial statements reflect all adjustments, which are normal and recurring in nature, necessary for fair financial statement presentation. The results of operations for the third quarter of 2017 are not necessarily indicative of the operating results anticipated for the full year. These Financial Statements should be read in conjunction with the audited Consolidated Financial Statements included in Part II, Item 8 of our Annual Report on Form 10-K for the year ended December 31, 2016 (2016 Form 10-K).

Use of Estimates

Use of Estimates

The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect certain reported amounts and related disclosures. Significant estimates include:

• liability for unpaid losses and loss adjustment expenses (loss reserves) related to workers' compensation and workers' compensation collateral receivable,

• health insurance loss reserves,

• liability for insurance premiums payable,

• impairments of goodwill and other intangible assets,

• income tax assets and liabilities, and

• liability for legal contingencies.

These estimates are based on historical experience and on various other assumptions that we believe to be reasonable from the facts available to us. Some of the assumptions are highly uncertain at the time of estimation. To the extent actual experience differs from the assumptions used, our consolidated financial statements could be materially affected.

Recent Accounting Pronouncements

Recent Accounting Pronouncements

Recently adopted accounting guidance

Share-based payments - In March 2016, the FASB issued ASU 2016-09-Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting, as part of the Simplification Initiative to simplify certain aspects of the accounting for share-based payment transactions to employees. The new standard requires excess tax benefits and tax deficiencies to be recorded in the statements of income as a component of the provision for income taxes when stock awards vest or are settled. In addition, it eliminates the requirement to reclassify cash flows related to excess tax benefits from operating activities to financing activities on the condensed consolidated statements of cash flows. The standard also provides an accounting policy election to account for forfeitures as they occur, allows us to withhold more of an employee’s vesting shares for tax withholding purposes without triggering liability accounting, and clarifies that all cash payments made to tax authorities on an employee’s behalf for withheld shares should be presented as a financing activity on our cash flows statement. The new standard was effective for us beginning January 1, 2017.

Upon adoption, excess tax benefits or deficiencies from share-based award activity were reflected in the condensed consolidated statements of income as a component of the provision for income taxes, whereas they previously were recognized in equity. We also elected to account for forfeitures as they occur, rather than estimate expected forfeitures. The adoption of ASU 2016-09 resulted in a net cumulative-effect adjustment of $0.3 million, reflected as an increase to retained earnings as of January 1, 2017, mostly related to the recognition of the previously unrecognized excess tax benefits using the modified retrospective method. The previously unrecognized excess tax effects were recorded as an increase to deferred tax assets.

We adopted the aspects of the standard affecting the cash flow presentation retrospectively, and accordingly, to conform to the current year presentation, we reclassified$2.6 million of tax deficiencies under financing activities to operating activities for the period ended September 30, 2016, on our condensed consolidated statements of cash flows. The presentation requirements for cash flows related to employee taxes paid for withheld shares had no impact to any of the periods presented on our condensed consolidated statements of cash flows since such cash flows have historically been presented as a financing activity.

Recently issued accounting pronouncements

Lease arrangements -In February 2016, the FASB issued ASU 2016-02-Leases. The amendment requires that lease arrangements longer than 12 months result in an entity recognizing lease assets and lease liabilities. Most significant impact is on those leases classified as operating leases under previous U.S. GAAP. Under the new standard, disclosures are required to meet the objective of enabling users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases.

The amendment is effective for annual reporting periods, and interim periods within those years beginning after December 15, 2018. We currently anticipate adoption of the new standard effective January 1, 2019.

We anticipate this standard will have a material impact on our condensed consolidated financial statements. While we are continuing to assess all potential impacts of the standard, we currently believe the most significant impact relates to our accounting for equipment, office and data-center operating leases.

Financial Instruments - In January 2016, the FASB issued ASU 2016-01-Recognition and Measurement of Financial Assets and Financial Liabilities. The amendment addresses various aspects of the recognition, measurement, presentation, and disclosure for financial instruments. The amendment is effective for annual reporting periods, and interim periods within those years beginning after December 15, 2017. Early adoption by public entities is permitted only for certain provisions. We are currently in the process of evaluating the impact of the adoption of this standard on our condensed consolidated financial statements.

Revenue Recognition - In May 2014, the FASB issued ASU 2014-09-Revenue from Contracts with Customers, which will replace most existing revenue recognition guidance under GAAP. The core principle of the guidance is that an entity should recognize revenue for the transfer of promised goods or services to customers that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard provides a five-step analysis of transactions to determine when and how revenue is recognized. In July 2015, the FASB deferred the effective date to annual reporting periods, and interim periods within those years, beginning after December 15, 2017. Early adoption at the original effective date of December 15, 2016 is permitted. The amendments may be applied retrospectively or as a cumulative-effect adjustment as of the date of adoption. In March, April and May 2016, the FASB issued ASU 2016-08 Principal versus Agent Considerations (Reporting Revenue Gross versus Net), ASU 2016-10 Identifying Performance Obligations and Licensing, ASU 2016-12 Narrow-Scope Improvements and Practical Expedients and ASU 2016-20 Technical Corrections and Improvements, respectively, providing further clarification to be considered when implementing ASU 2014-09. The guidance permits two methods of adoption: retrospectively to each prior reporting period presented (full retrospective method), or retrospectively with the cumulative effect of initially applying the guidance recognized at the date of initial application (the modified retrospective method). We currently anticipate adopting the new standard effective beginning January 1, 2018 using the modified retrospective method.

Under the modified retrospective method, the new standard will be applied to all contracts initiated on or after the effective date. For contracts with remaining obligations as of the effective date, opening retained earnings will be adjusted for the cumulative effect of the change to the new standard as of the effective date.

We anticipate this standard will have a material impact on our condensed consolidated financial statements. While we do not anticipate this standard will result in a material adjustment to beginning balance retained earnings, we do anticipate this standard will have a material impact on our condensed consolidated financial statements on a prospective basis. Specifically, we currently believe the adoption will have a material impact on our accounting for sales commission expense, deferred revenue, income tax provision and deferred taxes. We anticipate that certain client acquisition costs will be deferred over the expected client tenure. We expect our professional service revenues and insurance service revenues will remain substantially unchanged. The actual revenue recognition treatment required under the standard will be dependent on contract specific terms, and may vary in some instances from recognition at the time of billing.

At the date of adoption, we expect to record a net cumulative effect adjustment in retained earnings associated with unamortized deferred revenue and sales commission related to any open customer contracts as of adoption date.

Statement of Cash Flows - In November and August 2016, the FASB issued (ASU) 2016-18 - Statement of Cash Flows (Topic 230): Restricted Cash and 2016-15-Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. The new guidance is intended to reduce diversity in practice in how restricted cash and other certain transactions are classified in the statement of cash flows. The amendments are effective for annual reporting periods, and interim periods within those years, beginning after December 15, 2017. Early adoption is permitted, provided that all of the amendments are adopted in the same period. The guidance requires application using a retrospective transition method.

As of September 30, 2017 and December 31, 2016, we had total restricted cash, restricted cash equivalents and payroll funds collected of $748.5 million and $1.0 billion, respectively. Currently, changes in these balances are presented as operating cash activities in the condensed consolidated statements of cash flows. Under the new guidance, changes in these amounts will be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the condensed consolidated statements of cash flows.

Although there are several other new accounting pronouncements issued or proposed by the FASB, which we have adopted or will adopt, as applicable, we do not believe any of these other accounting pronouncements have had or will have a material impact on its consolidated financial position, operating results or statements of cash flows.

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Cash, Cash Equivalents and Investments (Tables)

9 Months Ended

Sep. 30, 2017

Cash and Cash Equivalents [Abstract]

Cash, Cash Equivalents and Investments

Our total corporate and WSE related cash, cash equivalents and investments are summarized below:

	September 30, 2017								December 31, 2016
(in thousands)	Cash and cash equivalents		Available for sale marketable securities		Certificate of deposits		Total		Cash and cash equivalents		Available for sale marketable securities		Certificate of deposits		Total
Cash and cash equivalents	$	263,527	$	—	$	—	$	263,527	$	184,004	$	—	$	—	$	184,004
Restricted cash and cash equivalents	15,445		—		—		15,445		14,569		—		—		14,569
Restricted cash, cash equivalents and investments, noncurrent
Collateral for workers' compensation claims	123,366		36,841		—		160,207		78,672		51,829		—		130,501
Worksite employee related assets
Restricted cash, cash equivalents and investments, current
Collateral for health benefits claims	68,907		—		—		68,907		65,022		—		—		65,022
Collateral for workers' compensation claims	85,284		508		—		85,792		64,773		—		—		64,773
Collateral to secure standby letter of credit	—		—		2,324		2,324		—		—		2,320		2,320
Total WSE related restricted cash, cash equivalents and investments, current	154,191		508		2,324		157,023		129,795		—		2,320		132,115
Payroll funds collected	455,494		—		—		455,494		825,958		—		—		825,958
Total	$	1,012,023	$	37,349	$	2,324	$	1,051,696	$	1,232,998	$	51,829	$	2,320	$	1,287,147

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Worksite Employee Related Assets and Liabilities (Tables)

9 Months Ended

Sep. 30, 2017

Other Industries [Abstract]

Schedule of Components of the Company's WSE-Related Assets and WSE-Related Liabilities

(in thousands)	September 30, 2017		December 31, 2016
Worksite employee related assets:
Restricted cash, cash equivalents and investments	$	157,023	$	132,115
Payroll funds collected	455,494		825,958
Unbilled revenue (net of advance collections of $10,038    and $8,602 at September 30, 2017 and December 31, 2016,    respectively)	284,136		293,192
Accounts receivable (net of allowance for doubtful accounts of    $304 and $292 at September 30, 2017 and December 31, 2016,    respectively)	5,912		4,854
Prepaid insurance premiums	27,200		12,805
Workers' compensation collateral receivable	1,417		2,136
Other payroll assets	10,031		10,411
Total worksite employee related assets	$	941,213	$	1,281,471
Worksite employee related liabilities:
Accrued wages	$	274,123	$	272,966
Client deposits	28,096		56,182
Payroll tax liabilities	368,207		692,460
Unpaid losses and loss adjustment expenses (less than 1 year):
Health benefits loss reserves	129,681		129,430
Workers' compensation loss reserves (net of collateral paid of $7,105 and $9,234 at September 30, 2017 and December 31, 2016, respectively)	63,683		63,702
Insurance premiums and other payables	25,654		14,223
Other payroll withholdings	45,424		47,032
Total worksite employee related liabilities	$	934,868	$	1,275,995

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Workers Compensation Assets and Liabilities (Tables)

9 Months Ended

Sep. 30, 2017

Insurance [Abstract]

Summary of Activities in Liability for Unpaid Claims and Claims Adjustment Expenses

The following table summarizes the workers’ compensation loss reserve activity for the three and nine months ended September 30, 2017 and 2016:

	Three Months Ended September 30,						Nine Months Ended September 30,
(in thousands)	2017			2016			2017			2016
Total loss reserves, beginning of period	$	254,684		$	214,711		$	254,614		$	190,102
Incurred
Current year	22,618			26,717			69,745			78,063
Prior years	(4,294		)	4,947			(2,797		)	12,951
Total incurred	18,324			31,664			66,948			91,014
Paid
Current year	(3,464		)	(6,738		)	(9,101		)	(9,016		)
Prior years	(20,450		)	(17,130		)	(63,367		)	(49,593		)
Total paid	(23,914		)	(23,868		)	(72,468		)	(58,609		)
Total loss reserves, end of period	$	249,094		$	222,507		$	249,094		$	222,507

The following summarizes workers' compensation liabilities on the condensed consolidated balance sheets:

(in thousands)	September 30, 2017			December 31, 2016
Total loss reserves, end of period	$	249,094		$	254,614
Collateral paid to carriers and offset against loss reserves	(27,412		)	(31,611		)
Total loss reserves, net of carrier collateral offset	$	221,682		$	223,003
Payable in less than 1 year (1)  (net of collateral paid to carriers of $7,105 and $9,234 at September 30, 2017 and December 31, 2016, respectively)	$	63,683		$	63,702
Payable in more than 1 year (net of collateral paid to carriers of $20,307 and $22,377 at September 30, 2017 and December 31, 2016, respectively)	157,999			159,301
Total loss reserves, net of carrier collateral offset	$	221,682		$	223,003

(1) Included in WSE related liabilities within Note 3 to these condensed consolidated financial statements.

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Financial Instruments and Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2017

Investments, Debt and Equity Securities [Abstract]

Summary of Available-for-Sale Marketable Securities

The following table summarizes our investments by significant categories and fair value measurements on a recurring basis as of September 30, 2017 and December 31, 2016.

(in thousands)	Maturity  (in years)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
September 30, 2017
Level 1:
Investments:
U.S. treasuries	< 3	$	36,916	$	—	$	(75	)	$	36,841
Mutual funds	N/A	500		8		—			508
Total investments		$	37,416	$	8	$	(75	)	$	37,349
Level 2:
Certificates of deposit	< 1	$	2,324	$	—	$	—		$	2,324
Total		$	39,740	$	8	$	(75	)	$	39,673
December 31, 2016
Level 1:
Investments:
U.S. treasuries	< 3	$	51,376	$	25	$	(77	)	$	51,324
Mutual funds	N/A	500		5		—			505
Total investments		$	51,876	$	30	$	(77	)	$	51,829
Level 2:
Certificates of deposit	< 1	$	2,320	$	—	$	—		$	2,320
Total		$	54,196	$	30	$	(77	)	$	54,149

Summary of Financial Assets Measured at Fair Value on Recurring Basis

The following table summarizes our investments by significant categories and fair value measurements on a recurring basis as of September 30, 2017 and December 31, 2016.

(in thousands)	Maturity  (in years)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
September 30, 2017
Level 1:
Investments:
U.S. treasuries	< 3	$	36,916	$	—	$	(75	)	$	36,841
Mutual funds	N/A	500		8		—			508
Total investments		$	37,416	$	8	$	(75	)	$	37,349
Level 2:
Certificates of deposit	< 1	$	2,324	$	—	$	—		$	2,324
Total		$	39,740	$	8	$	(75	)	$	39,673
December 31, 2016
Level 1:
Investments:
U.S. treasuries	< 3	$	51,376	$	25	$	(77	)	$	51,324
Mutual funds	N/A	500		5		—			505
Total investments		$	51,876	$	30	$	(77	)	$	51,829
Level 2:
Certificates of deposit	< 1	$	2,320	$	—	$	—		$	2,320
Total		$	54,196	$	30	$	(77	)	$	54,149

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Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2017

Equity [Abstract]

Summary of Stock Option Activity under the Company's Equity-Based Plans

The following table summarizes stock option activity under our equity-based plans for the nine months ended September 30, 2017:

	Number of Shares
Balance at December 31, 2016	2,815,224
Granted	—
Exercised	(1,280,726	)
Cancelled	(12,297	)
Forfeited	(57,540	)
Expired	—
Balance at September 30, 2017	1,464,661
Exercisable at September 30, 2017	1,192,694

Summary of Restricted Stock Unit Activity under the Company's Equity-Based Plans

The following table summarizes restricted stock unit (RSU) and performance-based restricted stock unit (PSU) activity under our equity-based plans for the nine months ended September 30, 2017:

	RSUs				PSUs
	Number of Units		Weighted-Average Grant Date Fair Value		Number of Units		Weighted-Average Grant Date Fair Value
Nonvested at December 31, 2016	2,323,051		$	20.32	149,412		$	33.51
Granted	1,119,525		28.68		330,674		29.69
Vested	(795,856	)	20.41		(7,518	)	33.51
Forfeited	(232,727	)	23.38		(18,894	)	33.51
Nonvested at September 30, 2017	2,413,993		$	23.87	453,674		$	30.72

Summary of Performance Based Restricted Stock Unit Activity

The following table summarizes restricted stock unit (RSU) and performance-based restricted stock unit (PSU) activity under our equity-based plans for the nine months ended September 30, 2017:

	RSUs				PSUs
	Number of Units		Weighted-Average Grant Date Fair Value		Number of Units		Weighted-Average Grant Date Fair Value
Nonvested at December 31, 2016	2,323,051		$	20.32	149,412		$	33.51
Granted	1,119,525		28.68		330,674		29.69
Vested	(795,856	)	20.41		(7,518	)	33.51
Forfeited	(232,727	)	23.38		(18,894	)	33.51
Nonvested at September 30, 2017	2,413,993		$	23.87	453,674		$	30.72

Summary of Stock-based Compensation Expense

Stock-based compensation expense and other disclosures for stock-based awards made to our employees pursuant to the equity plans was as follows: 

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2017		2016		2017		2016
Cost of providing services	$	1,845	$	1,605	$	5,488	$	5,044
Sales and marketing	1,524		1,491		4,447		5,119
General and administrative	3,259		2,544		8,294		8,161
Systems development and programming costs	1,072		624		3,177		1,845
Total stock-based compensation expense	$	7,700	$	6,264	$	21,406	$	20,169
Income tax benefit related to stock-based compensation expense	$	2,813	$	2,267	$	7,621	$	7,095
Tax benefit realized from stock options exercised and similar awards	$	5,942	$	1,721	$	21,976	$	4,136

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Earnings Per Share (EPS) (Tables)

9 Months Ended

Sep. 30, 2017

Earnings Per Share [Abstract]

Schedule of Earnings Per Share

The following table presents the computation of our basic and diluted EPS attributable to our common stock:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands, except per share data)	2017		2016		2017		2016
Net income	$	42,836	$	14,581	$	111,524	$	38,440
Weighted average shares of common stock outstanding	69,498		70,188		69,016		70,478
Basic EPS	$	0.62	$	0.21	$	1.62	$	0.55
Net income	$	42,836	$	14,581	$	111,524	$	38,440
Weighted average shares of common stock	69,498		70,188		69,016		70,478
Dilutive effect of stock options and restricted stock units	2,002		1,777		2,123		1,648
Weighted average shares of common stock outstanding	71,500		71,965		71,139		72,126
Diluted EPS	$	0.60	$	0.20	$	1.57	$	0.53
Common stock equivalents excluded from income per diluted share because of their anti-dilutive effect	482		817		1,856		912

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Description of Business and Significant Accounting Policies - Additional Information (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017 USD ($) segment	Sep. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net cash used in financing activities	$ (65,063)	$ (68,998)
Net cash provided by operating activities	$ 158,951	80,699
Number of reportable segments as result of acquisitions | segment	1
Restricted cash, cash equivalents and payroll funds collected	$ 748,500		$ 1,000,000
Accounting Standards Update 2016-09, Statutory Tax Withholding Component
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net cash used in financing activities		(2,600)
Net cash provided by operating activities		$ 2,600
Retained Earnings | Accounting Standards Update 2016-09, Forfeiture Rate Component
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment			$ 300

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Cash, Cash Equivalents and Investments - Components of Cash, Cash Equivalents and Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Restricted Cash and Cash Equivalents Items [Line Items]
Cash and cash equivalents	$ 263,527	$ 184,004	$ 160,558	$ 166,178
Restricted cash and cash equivalents	15,445	14,569
Restricted cash and available for sale investments	160,207	130,501
Restricted cash and investments, current	157,023	132,115
Payroll funds collected	455,494	825,958
Restricted cash and investments	1,051,696	1,287,147
Cash and Cash Equivalents
Restricted Cash and Cash Equivalents Items [Line Items]
Cash and cash equivalents	263,527	184,004
Restricted cash and cash equivalents	15,445	14,569
Restricted cash and available for sale investments	123,366	78,672
Restricted cash and investments, current	154,191	129,795
Payroll funds collected	455,494	825,958
Restricted cash and investments	1,012,023	1,232,998
Available-for-sale Securities
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and available for sale investments	36,841	51,829
Restricted cash and investments, current	508
Restricted cash and investments	37,349	51,829
Certificates of deposit
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and investments, current	2,324	2,320
Restricted cash and investments	2,324	2,320
Health Benefit Claims Collateral
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and investments, current	68,907	65,022
Health Benefit Claims Collateral | Cash and Cash Equivalents
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and investments, current	68,907	65,022
Workers' Compensation Claims Collateral
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and investments, current	85,792	64,773
Workers' Compensation Claims Collateral | Cash and Cash Equivalents
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and investments, current	85,284	64,773
Workers' Compensation Claims Collateral | Available-for-sale Securities
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and investments, current	508
Standby Letter of Credit Collateral
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and investments, current	$ 2,324	$ 2,320

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Worksite Employee Related Assets and Liabilities - Schedule of Components of the Company's WSE-Related Assets and WSE-Related Liabilities (Details) $ in Thousands	Sep. 30, 2017 USD ($) employee	Dec. 31, 2016 USD ($) employee
Worksite employee-related assets:
Restricted cash, cash equivalents and investments	$ 157,023	$ 132,115
Payroll funds collected	455,494	825,958
Unbilled revenue (net of advance collections of $10,038 and $8,602 at September 30, 2017 and December 31, 2016, respectively)	284,136	293,192
Accounts receivable (net of allowance for doubtful accounts of $304 and $292 at September 30, 2017 and December 31, 2016, respectively)	5,912	4,854
Prepaid insurance premiums	27,200	12,805
Workers' compensation collateral receivable	1,417	2,136
Other payroll assets	10,031	10,411
Total worksite employee-related assets	941,213	1,281,471
Advance collection	10,038	8,602
Allowance for doubtful accounts	304	292
Liability for unpaid claims and claims adjustment expense collateral, current	7,105	9,234
Worksite employee-related liabilities:
Accrued wages	274,123	272,966
Client deposits	28,096	56,182
Payroll tax liabilities	368,207	692,460
Health benefits loss reserves	129,681	129,430
Workers' compensation loss reserves (net of collateral paid of $7,105 and $9,234 at September 30, 2017 and December 31, 2016, respectively)	63,683	63,702
Insurance premiums and other payables	25,654	14,223
Other payroll deductions	45,424	47,032
Total worksite employee-related liabilities	$ 934,868	$ 1,275,995
Number of employees | employee	2,700	2,600

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Workers Compensation Assets and Liabilities - Summary of Workers' Compensation Loss Reserve Activity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Liability for Unpaid Claims and Claims Adjustment Expense
Total loss reserves, beginning of period	$ 254,684	$ 214,711	$ 254,614	$ 190,102
Incurred
Current year	22,618	26,717	69,745	78,063
Prior years	(4,294)	4,947	(2,797)	12,951
Total incurred	18,324	31,664	66,948	91,014
Paid
Current year	(3,464)	(6,738)	(9,101)	(9,016)
Prior years	(20,450)	(17,130)	(63,367)	(49,593)
Total paid	(23,914)	(23,868)	(72,468)	(58,609)
Total loss reserves, end of period	$ 249,094	$ 222,507	$ 249,094	$ 222,507

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Workers Compensation Assets and Liabilities - Summary of Workers' Compensation Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Insurance [Abstract]
Collateral paid to carriers and offset against loss reserves	$ (27,412)	$ (31,611)
Total loss reserves, net of carrier collateral offset	221,682	223,003
Payable in less than 1 year (net of collateral paid to carriers of $7,105 and $9,234 at September 30, 2017 and December 31, 2016, respectively)	63,683	63,702
Payable in more than 1 year (net of collateral paid to carriers of $20,307 and $22,377 at September 30, 2017 and December 31, 2016, respectively)	157,999	159,301
Liability for unpaid claims and claims adjustment expense collateral, current	7,105	9,234
Liability for unpaid claims and claims adjustment expense collateral, noncurrent	$ 20,307	$ 22,377

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Workers Compensation Assets and Liabilities - Additional Information (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Insurance [Abstract]
Collateral held by insurance carriers	$ 68,800	$ 65,600
Collateral paid to carriers and offset against loss reserves	$ (27,412)	$ (31,611)

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Financial Instruments and Fair Value Measurements - Summary of Available-for-Sale Marketable Securities (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Schedule Of Available For Sale Securities [Line Items]
Gross Unrealized Gains	$ 8	$ 30
Gross Unrealized Losses	(75)	(77)
Investments and cash equivalents, total	39,740	54,196
Investments and cash equivalents, fair value, total	$ 39,673	$ 54,149
U.S. treasuries
Schedule Of Available For Sale Securities [Line Items]
Contractual maturities (less than)	3 years	3 years
Certificates of deposit, at carrying value
Schedule Of Available For Sale Securities [Line Items]
Contractual maturities (less than)	1 year	1 year
Level I | U.S. treasuries
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 36,916	$ 51,376
Gross Unrealized Gains	0	25
Gross Unrealized Losses	(75)	(77)
Estimated Fair Value	36,841	51,324
Level I | Mutual funds
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	500	500
Gross Unrealized Gains	8	5
Gross Unrealized Losses	0	0
Estimated Fair Value	508	505
Level I | U.S. Treasuries & Mutual Funds
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	37,416	51,876
Gross Unrealized Gains	8	30
Gross Unrealized Losses	(75)	(77)
Estimated Fair Value	37,349	51,829
Level II | Certificates of deposit, at carrying value
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	2,324	2,320
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	$ 2,324	$ 2,320

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Financial Instruments and Fair Value Measurements - Additional Information (Details) - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Realized gains or losses	$ 0	$ 0
Gross Unrealized Losses	$ (75,000)		$ (77,000)
Percentage of total fair value available for sale securities in unrealized loss position	100.00%		58.00%
U.S. Treasuries & Mutual Funds | Level I
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Gross Unrealized Losses	$ (75,000)		$ (77,000)
U.S. treasuries | Level I
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Gross Unrealized Losses	(75,000)		(77,000)
Reported Value Measurement
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Notes payable	434,300,000		462,900,000
Estimate of Fair Value
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Notes payable	$ 437,700,000		$ 462,900,000

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Stockholders' Equity - Additional Information (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Equity [Abstract]
Additional number of shares available for grant	8,900,000
Aggregate intrinsic value	$ 31.4	$ 46.2
Stock repurchased during period, shares	1,428,957
Stock repurchased during period, value	$ 39.3
Available for further repurchases, value	$ 20.7

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Stockholders' Equity - Summary of Stock Option Activity under the Company's Equity-Based Plans (Details)	9 Months Ended
	Sep. 30, 2017 shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of Shares, Beginning Balance	2,815,224
Number of Shares, Granted	0
Number of Shares, Exercised	(1,280,726)
Number of Shares, Canceled	(12,297)
Number of Shares, Forfeited	(57,540)
Number of Shares, Expired	0
Number of Shares, Ending Balance	1,464,661
Number of Shares, Exercisable at September 30, 2017	1,192,694

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Stockholders' Equity - Summary of Restricted Unit Activity under the Company's Equity-Based Plans (Details) - Restricted Stock Unit	9 Months Ended
	Sep. 30, 2017 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Number of Units, Beginning Balance | shares	2,323,051
Number of Units, Granted | shares	1,119,525
Number of Units, Vested | shares	(795,856)
Number of Units, Forfeited | shares	(232,727)
Number of Units, Ending Balance | shares	2,413,993
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Weighted Average Grant Date Fair Value, Beginning Balance | $ / shares	$ 20.32
Weighted Average Grant Date Fair Value, Granted | $ / shares	28.68
Weighted Average Grant Date Fair Value, Vested | $ / shares	20.41
Weighted Average Grant Date Fair Value, Forfeited | $ / shares	23.38
Weighted Average Grant Date Fair Value, Ending Balance | $ / shares	$ 23.87

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Stockholders' Equity - Summary of Performance Based Restricted Stock Unit Activity (Details) - Performance-based restricted stock units	9 Months Ended
	Sep. 30, 2017 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Number of Units, Beginning Balance | shares	149,412
Number of Units, Granted | shares	330,674
Number of Units, Vested | shares	(7,518)
Number of Units, Forfeited | shares	(18,894)
Number of Units, Ending Balance | shares	453,674
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Weighted Average Grant Date Fair Value, Beginning Balance | $ / shares	$ 33.51
Weighted Average Grant Date Fair Value, Granted | $ / shares	29.69
Weighted Average Grant Date Fair Value, Vested | $ / shares	33.51
Weighted Average Grant Date Fair Value, Forfeited | $ / shares	33.51
Weighted Average Grant Date Fair Value, Ending Balance | $ / shares	$ 30.72

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Stockholders' Equity - Summary of Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 7,700	$ 6,264	$ 21,406	$ 20,169
Income tax benefit related to stock-based compensation expense	2,813	2,267	7,621	7,095
Tax benefit realized from stock options exercised and similar awards	5,942	1,721	21,976	4,136
Cost of providing services
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	1,845	1,605	5,488	5,044
Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	1,524	1,491	4,447	5,119
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	3,259	2,544	8,294	8,161
Systems development and programming costs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 1,072	$ 624	$ 3,177	$ 1,845

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Earnings Per Share (EPS) - Schedule of Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share [Abstract]
Net income	$ 42,836	$ 14,581	$ 111,524	$ 38,440
Weighted average shares of common stock outstanding	69,498,218	70,187,989	69,016,054	70,478,266
Basic EPS (in dollars per share)	$ 0.62	$ 0.21	$ 1.62	$ 0.55
Dilutive effect of stock options and restricted stock units	2,002,000	1,777,000	2,123,000	1,648,000
Weighted average shares of common stock outstanding	71,499,591	71,964,603	71,138,743	72,126,060
Diluted EPS (in dollars per share)	$ 0.60	$ 0.20	$ 1.57	$ 0.53
Common stock equivalents excluded from income per diluted share because of their anti-dilutive effect	482,000	817,000	1,856,000	912,000

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Income Taxes - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Tax Contingency [Line Items]
Effective income tax rate	26.30%	38.40%	28.20%	41.80%
Unrecognized tax benefits, period increase			$ 0.9
Unrecognized tax benefits	$ 4.4		4.4
Effective income tax rate reconciliation, unrecognized tax benefits, amount			2.5
Unrecognized tax benefits, interest	0.2		0.2
Unrecognized tax benefits, income tax penalties	$ 0.2		0.2
Employment tax credit			10.5
Internal Revenue Service (IRS)
Income Tax Contingency [Line Items]
Income tax examination, penalties and interest expense			$ 4.0

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Commitments and Contingencies - Additional Information (Details)	1 Months Ended
	Jul. 31, 2017 USD ($)	Sep. 30, 2017 USD ($) letter_of_credit
Debt Instrument [Line Items]
Operating leases, future minimum payments due	$ 32,400,000
Operating lease term	10 years
Number of letters of credit | letter_of_credit		2
Standby Letters of Credit
Debt Instrument [Line Items]
Current borrowing capacity		$ 17,800,000
First lien credit facility | Credit Facility
Debt Instrument [Line Items]
Line of credit facility		75,000,000.0
Unused portion of facility		59,500,000
First lien credit facility | Letter of Credit
Debt Instrument [Line Items]
Line of credit facility		40,000,000.0
First lien credit facility | Swingline
Debt Instrument [Line Items]
Line of credit facility		10,000,000.0
Workers' Compensation Obligation | Line of Credit
Debt Instrument [Line Items]
Line of credit facility		5,000,000.0
Unused portion of facility		$ 2,700,000