SAN FRANCISCO – November 21, 2006 – ABM Industries Incorporated (NYSE: ABM), one of California’s 400 largest publicly traded companies, is ranked 20th in a major research project that found more than 27 percent of the company’s directorships and executive positions are held by women. In partnership with the Forum for Women Entrepreneurs and Executives, the UC Davis Graduate School of Management released “The UC Davis Study of California Women Business Leaders,” to examine whether women’s participation in top level decision-making positions is increasing.

“It’s an honor to chair the board of an organization that is so committed to attracting and promoting women for key leadership roles,” said ABM Industries Board Chairman Maryellen Herringer, who also serves on the boards of PG&E Corporation, Pacific Gas & Electric Company and Wachovia Corporation.

Based on Standards & Poor’s data of the top 400 California companies distinguished by net revenue for fiscal 2005, the study identified the top 25 companies whose board of directors and executive positions were held by at least 25 percent women. ABM Industries was rated 20th in the study, with 27.8 percent women within its top management ranks. Hot Topic, Bebe Stores, Gymboree, Jack In The Box, Charles Schwab, The Gap, DreamWorks Animation, Hewlett-Packard and Wells Fargo are among the other leaders.

"In today’s marketplace and especially in the facilities management industry, being identified publicly as one of the top-ranked businesses with a high representation of women leaders is a distinction we are proud to accept,” said Henrik Slipsager, ABM Industries president and CEO. “We value and appreciate the significant contributions our female executives are making to our company’s business success,” he added.

The Forum for Women Entrepreneurs and Executives is a nonprofit network that promotes the success of women entrepreneurs and executives. It offers peer-to-peer networks, and professional and educational programs.

The UC Davis Graduate School of Management, celebrating its 25th anniversary, provides management education to more than 400 students on the Davis campus, in Sacramento and in the San Francisco Bay Area. Among its national rankings, The Princeton Review has recognized it as one of the top 10 business schools providing the greatest opportunity for women.

ABM Industries Incorporated

ABM Industries Incorporated (NYSE:ABM) is among the largest facility services contractors listed on the New York Stock Exchange. With fiscal 2005 revenues in excess of $2.5 billion and more than 73,000 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; Ampco System Parking; ABM Security Services, which includes American Commercial Security Services (ACSS) and Security Services of America (SSA); ABM Facility Services; ABM Engineering Services; and Amtech Lighting Services.