SAN FRANCISCO – August 28, 2007 – ABM Industries Incorporated (NYSE:ABM) will announce its financial performance for the company’s third quarter that ended on July 31, 2007, on Wednesday, September 5, 2007 after the market closes.

On Thursday, September 6, 2007 at 6:00 a.m. (PDT), ABM will host a live webcast of remarks on the third quarter earnings by President and Chief Executive Officer Henrik C. Slipsager, and Chief Financial Officer, George B. Sundby.

The webcast will be accessible at http://www.irconnect.com/primecast/07/q3/abm_3q2007.html. Listeners are asked to be online at least 15 minutes early to register, as well as to download and install any complimentary audio software that might be required. Following the call, the webcast will be available at this URL for a period of 90 days.

In addition to the webcast, a limited number of toll-free telephone lines will also be available for listeners who are among the first to call (800) 524-4293 within 15 minutes before the event. Telephonic replays will be accessible two hours after the broadcast and will be available through September 13, 2007 by dialing (800) 642-1687 or (706) 645-9291 and entering ID # 14999894.

About ABM Industries

ABM Industries Incorporated (NYSE:ABM) is among the largest facility services contractors listed on the New York Stock Exchange. With fiscal 2006 revenues in excess of $2.7 billion and more than 75,000 employees, ABM provides janitorial, parking, security, engineering and lighting services for thousands of commercial, industrial, institutional and retail facilities in hundreds of cities across the United States and British Columbia, Canada. The ABM Family of Services includes ABM Janitorial Services; Ampco System Parking; ABM Security Services; ABM Facility Services; ABM Engineering; and Amtech Lighting Services.