Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2020

Retirement Benefits [Abstract]

Summary of Plan Information Relating to Participation in Multiemployer Pension Plans

The following table summarizes plan information relating to Quanta’s participation in multiemployer defined benefit pension plans, including company contributions for the last three years, the status of the plans under the PPA and whether the plans are subject to a funding improvement or rehabilitation plan or contribution surcharges. The most recent PPA zone status available in 2020 and 2019 relates to the plans’ fiscal year-ends in 2019 and 2018. Forms 5500 were not yet available for the plan years ending in 2020. The PPA zone status is based on information that Quanta received from the respective plans, as well as publicly available information on the U.S. Department of Labor website, and is certified by the plan’s actuary. Although multiple factors or tests may result in red zone or yellow zone status, plans in the red zone generally are less than 65 percent funded, plans in the yellow zone generally are less than 80 percent funded, and plans in the green zone generally are at least 80

percent funded. Under the PPA, red zone plans are classified as “critical” status, yellow zone plans are classified as “endangered” status and green zone plans are classified as neither “endangered” nor “critical” status. The “Subject to Financial Improvement/ Rehabilitation Plan” column indicates plans for which a financial improvement plan or a rehabilitation plan is either pending or has been implemented. The last column lists the expiration dates of Quanta’s collective-bargaining agreements to which the plans are subject. Total contributions to these plans correspond to the number of union employees employed at any given time and the plans in which they participate and vary depending upon the location and number of ongoing projects at a given time and the need for union resources in connection with such projects. Information has been presented separately for individually significant plans, based on PPA funding status classification, and in the aggregate for all other plans.

	Employee Identification Number/ Pension Plan Number	PPA Zone Status		Subject to Financial Improve- ment/ Reha- bilitation Plan	Contributions (in thousands)						Sur-charge Imposed	Expiration Date of Collective Bargaining Agreement
Fund		2020	2019		2020		2019		2018
National Electrical Benefit Fund	53-0181657	Green	Green	No	$	40,902	$	44,414	$	35,399	No	Varies through August 2025
Excavators Union Local 731 Pension Fund	13-1809825	Green	Green	No	14,310		6,697		—		No	April 2022
Central Pension Fund of the IUOE & Participating Employers	36-6052390	Green	Green	No	8,467		11,638		9,246		No	Varies through June 2023
Eighth District Electrical Pension Fund	84-6100393	Green	Green	No	4,272		5,939		3,332		No	Varies through August 2023
Pipeline Industry Pension Fund	73-6146433	Green	Green	No	3,654		9,376		10,132		No	Varies through June 2023
Operating Engineers' Local 324 Pension Fund	38-1900637	Red	Red	Yes	2,629		4,315		2,310		Yes	Varies through June 2023
Locals 302 & 612 of the IUOE-Employers Construction Industry Retirement Plan	91-6028571	Green	Green	No	2,368		2,392		2,620		No	Varies through May 2021
Laborers Pension Trust Fund for Northern California	94-6277608	Green	Green	No	2,328		2,823		3,652		No	June 2023
Local 697 IBEW and Electrical Industry Pension Fund	51-6133048	Green	Green	No	1,840		3,717		2,656		No	May 2025
Plumbers and Pipefitters National Pension Fund	52-6152779	Yellow	Yellow	Yes	1,453		1,162		2,734		No	Varies through March 2023
Teamsters National Pipe Line Pension Plan	46-1102851	Green	Green	No	1,380		3,039		3,318		No	Varies through June 2023
Pension Trust Fund for Operating Engineers	94-6090764	Yellow	Yellow	Yes	1,177		956		1,922		Yes	June 2021
Laborers National Pension Fund	75-1280827	Red	Red	Yes	638		1,910		2,051		Yes	June 2023
West Virginia Laborers Pension Trust Fund	55-6026775	Green	Green	No	548		1,693		3,321		No	June 2023
Michigan Laborers’ Pension Plan	38-6233976	Yellow	Yellow	Yes	512		1,491		1,061		Yes	March 2025
International Union of Operating Engineers Local 132 Pension Fund	55-6015364	Green	Green	No	168		1,289		3,367		No	June 2023
Laborers District Council of W PA Pension Fund	25-6135576	Yellow	Yellow	Yes	77		1,194		1,029		No	June 2023
Employer-Teamsters Local Nos 175 & 505 Pension Trust Fund	55-6021850	Red	Red	Yes	48		530		1,209		Yes	June 2023
All other plans - U.S.					28,447		23,171		28,314
All other plans - Canada (1)					6,760		6,451		8,518
Total contributions					$	121,978	$	134,197	$	126,191

(1)    Multiemployer defined benefit pension plans in Canada are not subject to the reporting requirements under the PPA. Accordingly, certain information was not publicly available.

Quanta’s contributions to the following individually significant plans were five percent or more of the total contributions to these plans for the periods indicated based on the Forms 5500 for these plans for the years ended December 31, 2019 and 2018. Forms 5500 were not yet available for these plans for the year ended December 31, 2020.

Pension Fund	Plan Years in which Quanta Contributions Were Five Percent or More of Total Plan Contributions
National Electrical Benefit Fund	2019 and 2018
Eighth District Electrical Pension Fund	2019 and 2018
Pipeline Industry Pension Fund	2019 and 2018
Local 697 I.B.E.W. and Electrical Industry Pension Fund	2019 and 2018
Teamsters National Pipe Line Pension Plan	2019 and 2018
West Virginia Laborers Pension Trust Fund	2019 and 2018
I.B.E.W. Local 456 Pension Plan	2019 and 2018
Local Union No. 9 I.B.E.W. and Outside Contractors Pension Fund	2019 and 2018
International Union of Operating Engineers Local 132 Pension Fund	2018
Employer-Teamsters Local Nos 175 & 505 Pension Trust Fund	2018