SAN FRANCISCO, CA — January 25, 2008 — ABM Industries Incorporated (NYSE:ABM), a leading facility services contractor in the United States, announced that it is hosting an Investor Day presentation in New York on Thursday, January 31, 2008. The event is invitation-only, but will be broadcast live via the Internet and via teleconference beginning at 10:00 a.m. Eastern Time on Thursday, January 31.

Henrik Slipsager, President and Chief Executive Officer; Jim Lusk, EVP and Chief Financial Officer; and Jim McClure, EVP and President of ABM Janitorial will give presentations followed by a question and answer session.

The webcast can be accessed at www.abm.com and will feature a downloadable version of the presentation slides. Callers can participate by dialing (800) 524-4293 approximately 10 minutes prior to the conference time listed above. International or local participants should call (706) 679-3845. A replay of the call will also be available two hours after the call's completion and will be available through 11:59 p.m. Eastern Time on February 7, 2008 by calling (800) 642-1687 or (706) 645-9291 for international and local callers to access the playback; pass code is 32331324.

About ABM Industries
ABM Industries Incorporated (NYSE:ABM) is among the largest facility services contractors listed on the New York Stock Exchange. With fiscal 2007 revenues in excess of $2.8 billion and more than 105,000 employees, ABM provides janitorial, parking, security, engineering and lighting services for thousands of commercial, industrial, institutional and retail facilities across the United States as well as Puerto Rico 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.

Cautionary Statement under the Private Securities Litigation Reform Act of 1995
This press release contains forward-looking statements that set forth management's anticipated results based on management's plans and assumptions. Any number of factors could cause the Company's actual results to differ materially from those anticipated. These risks and uncertainties include, but are not limited to: (1) diversion of management focus from operations as a result of the OneSource and other acquisitions or the failure to timely realize anticipated cost savings and synergies or at all; (2) a technology environment that may be inadequate to support the growth of the business; (3) disruption in functions affected by the transition to a Shared Services Center; (4) a change in the frequency or severity of claims against the Company, a deterioration in claims management, the cancellation or non-renewal of the Company's primary insurance policies or a change in our customers' insurance needs; (5) a change in estimated claims; (6) debt service requirements that cause expense variations and affect cash flow; (7) labor disputes that lead to a loss of sales or expense variations; (8) a decline in commercial office building occupancy and rental rates lowers sales and profitability; (9) financial difficulties or bankruptcy of a major customer; (10) acquisition activity slows; (11) the loss of long-term customers; (12) intense competition that lowers revenue or reduces margins; (13) an increase in costs that the Company cannot pass on to customers; (14) natural disasters or acts of terrorism that disrupt the Company in providing services; (15) significant accounting and other control costs that reduce the Company's profitability; and (16) other issues and uncertainties that may include: unanticipated adverse jury determinations, judicial rulings or other developments in litigation to which the Company is subject, new accounting pronouncements or changes in accounting policies, changes in U.S. immigration law that raise the Company's administration costs, labor shortages that adversely affect the Company's ability to employ entry level personnel, legislation or other governmental action that detrimentally impacts the Company's expenses or reduces sales by adversely affecting the Company's customers, a reduction or revocation of the Company's line of credit that increases interest expense and the cost of capital, low levels of capital investments by customers, which tend to be cyclical in nature, that adversely impact the results of the Company's Lighting segment; and the resignation, termination, death or disability of one or more of the Company's key executives that adversely affects customer retention or day-to-day management of the Company. Additional information regarding these and other risks and uncertainties the Company faces is contained in the Company's Annual Report on Form 10-K and in other reports it files from time to time with the Securities and Exchange Commission. The Company undertakes no obligation to publicly update forward-looking statements, whether as a result of new information, future events or otherwise.

CONTACT:
David Farwell
Senior Vice President
ABM Industries Inc.
(415) 733-4000