NEW YORK, NY — December 5, 2008 — ABM Industries Incorporated (NYSE:ABM) will announce its financial performance for the company’s fourth quarter and full year that ended on October 31, 2008, on Monday, December 15, 2008 after the market closes.

On Tuesday, December 16, 2008 at 9:00 a.m. (ET), ABM will host a live webcast of remarks by President and Chief Executive Officer Henrik C. Slipsager, and Executive Vice President and Chief Financial Officer James S. Lusk.

The webcast will be accessible at http://investor.shareholder.com/media/eventdetail.cfm?eventid=62997&CompanyID=ABM&e=1&mediaKey=C3DA5A2F31A40959E5A7664D2A8BEF5D. (Due to its length, this URL may need to be copied/pasted into your Internet browser’s address field. Remove the extra space if one exists.)

Listeners are asked to be online at least 15 minutes early to register, as well as to download and install any complementary 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 877/741-4249 within fifteen minutes before the event. Telephonic replays will be accessible during the period from two hours to seven days after the call by dialing 888/203-1112, and then entering ID #1045881.

About ABM Industries

ABM Industries Incorporated (NYSE:ABM) through its subsidiaries (collectively “ABM”) is among the leading providers of facility services in the United States. With fiscal 2007 revenues in excess of $2.8 billion and more than 100,000 employees, ABM provides janitorial, parking, security and engineering services for thousands of commercial, industrial, institutional and retail facilities across the United States, Puerto Rico and British Columbia, Canada. ABM’s business services include ABM Janitorial Services; ABM Engineering Services; ABM Facility Services; Ampco System Parking; and ABM Security Services.