ABM Industries Files Form 12b-25 with the Securities and Exchange Commission

ABM has experienced unanticipated delays in completing thereconciliation of certain accounts affecting one of its operatingunits. These delays have in turn caused delays in completing theCompany's financial statements for the fiscal year ended October 31,2005 and management's assessment of internal control over financialreporting, the completion of which is a necessary prerequisite to thefiling of its Annual Report on Form 10-K for such fiscal year. Theaccounts in question are associated with a subsidiary acquired in theCompany's Security segment in 2004.

The Company issued a preliminary earnings release on December 14,2005 for the fiscal year ended October 31, 2005. In connection withthe reconciliation of the accounts in question, the Company hasdetermined that the estimates of cash and cash equivalents containedin this preliminary release will likely be reduced by approximately$6.8 million to approximately $57.2 million at October 31, 2005. Theoperating profit of the Security segment included in the preliminarynumbers ($13.6 million in 2005) may require reduction. Any suchreduction would reduce the net income from continuing operations andnet income of the Company as a whole from the numbers cited for 2005and above and in the preliminary earnings release, and may otherwisealter the amounts of other items included in the preliminary earningsrelease.

About ABM Industries

ABM Industries Incorporated is among the largest facility servicescontractors listed on the New York Stock Exchange. With more than73,000 employees, ABM provides janitorial, parking, security,engineering and lighting services for thousands of commercial,industrial, institutional and retail facilities in hundreds of citiesacross the United States and British Columbia, Canada. The ABM Familyof Services includes ABM Janitorial; Ampco System Parking; ABMSecurity, which includes American Commercial Security (ACSS) andSecurity Services of America (SSA); ABM Facility Services; ABMEngineering; and Amtech Lighting Services.

Cautionary Statement Under the Private Securities LitigationReform Act of 1995.

This press release contains forward-looking statements that setforth management's anticipated results based on management's plans andassumptions. Any number of factors could cause the Company's actualresults to differ materially from those anticipated. These risks anduncertainties include, but are not limited to: (1) a further delay inthe filing of the Company's Annual Report on Form 10-K and an adverseinternal control evaluation under Section 404 of the Sarbanes-OxleyAct that affects ABM's stock price; (2) a change in the frequency orseverity of claims against the Company, a deterioration in claimsmanagement, or the cancellation or non-renewal of the Company'sprimary insurance policies; (3) a change in actuarial analysis thatcauses an unanticipated change in insurance reserves; (4) the loss oflong-term customers; (5) intense competition that lowers revenue orreduces margins; (6) labor disputes that lead to a loss of sales andexpense variations; (7) acquisition activity slows or is unsuccessful;(8) a decline in commercial office building occupancy and rental rateslowers sales and profitability; (9) weakness in airline travel and thehospitality industry that affects the results of the Company's Parkingsegment; (10) financial difficulties or bankruptcy of a majorcustomer; (11) an increase in costs that the Company cannot pass on tocustomers; (12) a significant increase in the Company's significantaccounting and other control costs; (13) natural disasters or acts ofterrorism that disrupt the Company in providing services; and (14)other issues and uncertainties that may include: new accountingpronouncements or changes in accounting policies, labor shortages thatadversely affect the Company's ability to employ entry levelpersonnel, legislation or other governmental action that detrimentallyimpacts the Company's expenses or reduces sales by adversely affectingthe Company's customers such as state or locally mandated healthcarebenefits, impairment of goodwill and other intangible assets, areduction or revocation of the Company's line of credit that increasesinterest expense and the cost of capital, and the resignation,termination, death or disability of one or more of the Company's keyexecutives that adversely affects customer retention or day-to-daymanagement of the Company. Additional information regarding these andother risks and uncertainties the Company faces is contained in theCompany's Annual Report on Form 10-K and in other reports it filesfrom time to time with the Securities and Exchange Commission. TheCompany undertakes no obligation to publicly update forward-lookingstatements, whether as a result of new information, future events orotherwise.