ADP CEO to Speak at Industry Conference.

Gary C. Butler to Present at UBS Best of Americas Conference

ROSELAND, N.J. -- Automatic Data Processing, Inc. (NYSE:ADP) announced today that president and chief executive officer Gary C. Butler is scheduled to speak at the UBS Best of Americas Conference in London on Friday, September 21, 2007 8:40 a.m. local time (3:40 a.m. EDT). In his presentation to the investment community, Mr. Butler will provide an overview of the company and of ADP's opportunities in the large and growing markets it serves.

Investors and interested participants are invited to listen to the live webcast which may be accessed at ADP's Investor Relations home page, http://www.investquest.com/InvestQuest/a/adp/ by clicking on the webcast icon. In addition, the slide presentation will be available to download and print before the webcast at ADP's Investor Relations home page. A replay of the webcast will be available for approximately two weeks after the event and may be accessed in the same manner as the live webcast.

About ADP

ADP, with nearly $8 billion in revenues and approximately 585,000 clients, is one of the world's largest providers of business outsourcing solutions. Leveraging more than 55 years of experience, ADP offers a wide range of HR, payroll, tax and benefits administration solutions from a single source. ADP's easy-to-use, cost-effective solutions for employers provide superior value to companies of all types and sizes. ADP is also a leading provider of integrated computing solutions to auto, truck, motorcycle, marine and recreational vehicle dealers throughout the world. For more information about ADP or to contact a local ADP sales office, reach us at 1.800.225.5237 or visit the company's Web site at www.adp.com.