Press Release

Matrix Service Sets Date to Discuss Results for the Fourth Quarter and Full Year, Ended May 31, 2009TULSA, OK – July 21, 2009 - Matrix Service Co. (Nasdaq: MTRX), a leading industrial services company, will announce results for the Fourth Quarter and Full Year, ended May 31, 2009 on Tuesday, August 4, 2009 prior to the open of the market.

In conjunction with the earning release, Matrix Service will host a conference call with Michael J. Bradley, president and CEO and Thomas Long, chief financial officer.

A conference call will be held on August 4, 2009 at 11:00am ET / 10:00am CT and will be simultaneously broadcasted live over the Internet at www.matrixservice.com or www.vcall.com. Please allow extra time prior to the call to visit the site and download the streaming media software required to listen to the Internet broadcast. The online archive of the broadcast will be available within one hour of the live call.

About Matrix Service Company
Matrix Service Company provides general industrial construction and repair and maintenance services principally to the petroleum, petrochemical, power, bulk storage terminal, pipeline and industrial gas industries.

The Company is headquartered in Tulsa, Oklahoma, with regional operating facilities located in Oklahoma, Texas, California, Michigan, Pennsylvania, Illinois, Washington and Delaware in the U.S. and Canada.

This release contains forward-looking statements that are made in reliance upon the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. These statements are generally accompanied by words such as "anticipate", "continues", "expect", "forecast", "outlook", "believe", "estimate", "should" and "will" and words of similar effect that convey future meaning, concerning the Company's operations, economic performance and management's best judgment as to what may occur in the future. Future events involve risks and uncertainties that may cause actual results to differ materially from those we currently anticipate. The actual results for the current and future periods and other corporate developments will depend upon a number of economic, competitive and other influences, including those identified in the “Risk Factors” and “Forward-Looking Statements” sections and elsewhere in the Company's reports and filings made from time to time with the Securities and Exchange Commission. Many of these risks and uncertainties are beyond the control of the Company, and any one of which, or a combination of which, could materially and adversely affect the results of the Company's operations and its financial condition. We undertake no obligation to update information contained in this release.

For more information, please contact:

Matrix Service Company
Tom Long
Vice President Finance and CFO
T: 918-838-8822
E: telong@matrixservice.com

Investors and Financial Media:
Trúc Nguyen
Managing Director
Grayling
T: 646-284-9418
E: truc.nguyen@us.grayling.com