ADP to Webcast Financial Analyst Conference on March 14, 2006; Additional Details Provided.

ROSELAND, N.J. -- Automatic Data Processing, Inc. (NYSE:ADP) will hold its next financial analyst conference on Tuesday, March 14, 2006 from 8:45 a.m. to 12:00 p.m. (EST). Senior management will provide an update on ADP's businesses and will focus on strategic growth initiatives in Employer Services (ES).

Arthur F. Weinbach, chairman and chief executive officer, Gary C. Butler, president and chief operating officer, Karen E. Dykstra, chief financial officer, S. Michael Martone, group president - ES, and other members of the ES senior management team will be in attendance at the conference, including George Stoeckert, president - ES International, Regina Lee, National Account Services division president, Vince Coppola, Major Accounts Services division president, Alan Sheiness, Small Business Services division president, Carlos Rodriguez, TotalSource division president, John Gleason, senior vice president - ES sales, and Victor Saliterman, senior vice president - ES marketing.

The conference will be offered live via webcast and may be accessed through www.adp.com. An audio replay will also be available at www.adp.com for approximately two weeks after the presentation.

ADP, with $8.5 billion in revenues and approximately 590,000 clients worldwide, is one of the largest providers of a broad range of premier, mission-critical, cost-effective transaction processing and information-based business solutions.