ADP Rises to Number Two Spot on InformationWeek 500

Payroll and HR Leader Also Ranked Number One in Best Use of Emerging Technology and Best Use of Technology in Consulting and Business Services

ROSELAND, New Jersey -- September 13, 2006 -- ADP® Employer Services, a leading provider of integrated outsourced payroll, benefits and human resource services, today announced that it ranked number two on the 2006 InformationWeek 500. With three awards received, ADP was also named number one in two subcategories: the best use of emerging technology, and the best use of technology in consulting and business services. Company rankings were revealed on Monday night at a gala awards ceremony in Rancho Mirage, California.

This recognition is a testament to the IT (Information Technology) achievements ADP has made over the last year, making its position rise significantly from the 2005 listing. With two important technology initiatives underway, Service Oriented Architecture (SOA) and software provisioning and deployment, ADP is in the process of establishing an integrated suite of products that span the entire spectrum of HR services.

“We are honored to be named by InformationWeek as one of the top five companies driving technology innovation,” said Bob Bongiorno, CIO, ADP Employer Services. “Our approach to technology benefits clients by ensuring secure, reliable and efficient solutions. ADP is committed to the ongoing enhancement of new and legacy products to meet the evolving needs of our clients worldwide.”

ADP manages the administration of many employer related services such as payroll, HR, benefits, Time & Labor Management (TLM), tax compliance, retirement services and pre-hire activities. Over the last 24 months, ADP has implemented SOA to integrate these various product offerings onto a cohesive technology platform so all applications can share, exchange and re-use information. This IT strategy has enabled ADP to decrease time to market for new capabilities and better demonstrate the value of using multiple services from ADP.

“Our sincere congratulations to ADP for its three awards in this year’s InformationWeek 500. This company is a great representation of today’s leading technology innovators, and we are so glad they are able to join us this week,” said InformationWeek publishing director, Fritz Nelson. “From the thousands of nominations received, ADP stood out by driving some of the most forward-looking business technology initiatives to date.”

For the past 18 years, InformationWeek has identified and honored the nation’s most innovative users of information technology with its annual listing. The list is unique among corporate rankings because it spotlights the power of innovation in information technology, rather than simply identifying the biggest IT spenders. Additional details on the InformationWeek 500 can be found online at www.informationweek.com/iw500/.

About ADP

Automatic Data Processing, Inc. (NYSE: ADP), with nearly $9 billion in revenues and more than 570,000 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. ADP® Employer Services (ES), a division of ADP, offers the widest range of HR, payroll, and benefits administration solutions from a single source, to meet the extensive business needs of employers worldwide. Built with more than 50 years of industry experience, ADP ES’ cost-effective, easy-to-use solutions provide superior value to companies of all sizes. Approximately 540,000 companies rely on ADP ES for unparalleled service and compliance expertise, allowing them to focus on other core activities. For more information about ADP ES 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.

About InformationWeek

InformationWeek sets the agenda for business technology executives, covering the full range of information access points IT decision-makers use today. A trusted, authoritative source and information filter, InformationWeek helps community members understand and focus on what’s important up-to-the-minute -- in print, online, through independent research and at live, peer-to-peer events. Through its cross-media platform, InformationWeek delivers content to complement the print publication to its community of business technology leaders when and how they want it, 24/7. The InformationWeek community includes an audience of 2.5 million CIOs, IT executives and business managers who cut across industries, job titles, company sizes and global borders.

InformationWeek is consistently recognized for its commitment to excellence and thought leadership by the IT community, receiving many of the industry’s top media accolades, including several awards from the American Society of Business Publication Editors (ASBPE), top spots in BtoB Magazine’s Media Power 50 and Circulation Excellence Awards from Circulation Management Magazine.

About CMP Technology

CMP Technology is a marketing solutions company serving the technology, healthcare and lifestyles industries. Through its market-leading portfolio of trusted information brands, CMP Technology has earned the confidence of more professionals and enthusiasts in these fields than any other media company. As a result, CMP is the premier provider of access, insight and actionable programs designed to connect sellers and buyers in each of these industries in ways that yield superior return on investment. CMP Technology is a subsidiary of United Business Media (http://www.unitedbusinessmedia.com), a global provider of news distribution and specialist information services with a market capitalization of more than $3 billion.

Contact Information

Terry Corallo

Automatic Data Processing, Inc.

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