UNITED STATES SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (Date of earliest event reported):  March 4, 2009

ATS Corporation

(Exact name of registrant as specified in its charter)

Delaware	000-51552	11-3747850
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification No.)

7925 Jones Branch Drive, McLean, Virginia	22102
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code: (571) 766-2400

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 7.01                      Regulation FD Disclosure

On March 4, 2009, ATS Corporation (the “Company”) announced it expected to issue its fourth quarter earnings release on March 12, 2009 after the close of the market.  The Company will conduct a conference call at 5:00 p.m. Eastern Daylight Time on March 12, 2009 to discuss the results for the quarter and fiscal year ended December 31, 2008.  Instructions on how to access the call are contained in the press release, a copy of which is attached hereto as Exhibit 99.1

Item 8.01                      Other Events

On March 4, 2009, the Company announced it will hold its annual meeting of stockholders on May 5, 2009 at its headquarters, 7925 Jones Branch Drive, McLean, Virginia 22102 at 9:30 a.m., local time.  Stockholders of record at the close of business on March 15, 2009 are entitled to notice of and to vote at the meeting.

Item 9.01                      Financial Statements and Exhibits

(d) Exhibits

99.1   Press Release Dated March 4, 2009

SIGNATURES

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

Date:      March 4, 2009

ATS CORPORATION
By:	/s/ Dr. Edward H. Bersoff
	Dr. Edward H. Bersoff Chairman, President and Chief Executive Officer