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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): October 11, 2011

MPG OFFICE TRUST, INC.

(Exact name of registrant as specified in its charter)

(Registrant’s telephone number, including area code) 213-626-3300

N/A

(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:

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Section 1 – Registrant’s Business and Operations

On October 11, 2011, MPG Office Trust, Inc. and MPG Office, L.P. (together, the “Company”) entered into a Second Amended and Restated Employment Agreement with Shant Koumriqian, the Company’s Executive Vice President, Chief Financial Officer. A copy of the agreement is filed as Exhibit 99.1 to this report.

Under the terms of this agreement, Mr. Koumriqian’s annual base salary will remain $375,000 per year, and his target annual bonus will be $250,000. Mr. Koumriqian’s actual bonus will be determined by the Company’s Compensation Committee based on the attainment of performance metrics and individual objectives. Mr. Koumriqian must be employed by the Company through January 31, 2012 in order to be paid an annual bonus related to his performance during fiscal year 2011. Mr. Koumriqian will remain as Executive Vice President, Chief Financial Officer (or at the Company’s option, Executive Vice President) through the employment term. Pursuant to the agreement, Mr. Koumriqian’s employment with the Company will automatically terminate on March 31, 2012, unless terminated earlier by either the Company or Mr. Koumriqian, subject to the terms of the agreement.

Pursuant to the agreement, Mr. Koumriqian is not eligible to receive any future equity-based or long-term incentive awards from the Company and his outstanding stock options, restricted stock and restricted stock units will continue to vest per the terms of the applicable award agreements until March 31, 2012 or his termination date, whichever is earlier. All unvested awards will be forfeited upon termination.

If Mr. Koumriqian remains employed with the Company through March 31, 2012, subject to his execution and a non-revocation of a general release of claims, Mr. Koumriqian will be paid a pro-rated annual bonus of $62,500, representing a pro rata bonus for the first quarter of 2012 (based on his target annual bonus) and will be reimbursed for premiums for health insurance coverage from April 1, 2012 through December 31, 2012, unless he becomes eligible to receive health insurance coverage from a subsequent employer during that period. Additionally, the Company will pay for reasonable outplacement services for Mr. Koumriqian until December 31, 2012, or the date on which he is employed by a subsequent employer (if earlier).

Section 5 – Corporate Governance and Management

On October 11, 2011, Shant Koumriqian, the Company’s principal financial and accounting officer, entered into a Second Amended and Restated Employment Agreement with the Company. Under the terms of this agreement, Mr. Koumriqian’s employment as the Company’s Executive Vice President, Chief Executive Officer will terminate on March 31, 2012, unless terminated earlier by either the Company or Mr. Koumriqian, subject to the terms of the agreement.

Section 7 – Regulation FD

On October 14, 2011, the Company issued a press release announcing that Shant Koumriqian’s employment as the Company’s Executive Vice President, Chief Executive Officer will terminate on March 31, 2012, unless terminated earlier by either the Company or Mr. Koumriqian. A copy of the press release is furnished herewith as Exhibit 99.2.

The information being furnished pursuant to Item 7.01 shall not be deemed “filed” for any purpose, including for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”),

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or otherwise subject to the liabilities of that section. The information in this Item 7.01 shall not be deemed incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act regardless of any general incorporation language in such filing.

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Section 9 – Financial Statements and Exhibits

The following exhibits are either filed or furnished with this Current Report on Form 8-K:

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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.

Dated: As of October 14, 2011