February 7, 2006

(MINNEAPOLIS) - February 7, 2006 - Ceridian (www.ceridian.com), a leader in managed human resource outsourcing solutions, announced today that it has been positioned in the "Leaders" quadrant of the 2006 Gartner, Inc. (a)"Magic Quadrant for U.S. Midmarket Human Resources Management Systems (HRMS)."

The 2006 Gartner Magic Quadrant for U.S. Midmarket HRMS reviewed human resource software and service vendors that have sold to more than 30 new U.S. customers with between 500 and 2,500 employees in the 12 months ending June 30, 2005. Those companies positioned in the "leaders" quadrant by Gartner are vendors whose performances excel in the U.S. for midmarket HRMS solutions. According to Gartner, leaders "are able to deliver breadth and depth of HRMS functionality, as well as demonstrate a strong vision to capitalize on emerging market trends. Leaders successfully articulate a business proposition that resonates with buyers, supported by the viability and operational capability to deliver."

According to Ceridian's senior vice president of HR/Payroll, Sharon Stein, "We believe that Gartner's positioning of us in the 'Leader' quadrant in this prominent industry report is confirmation of our market position in the HR service delivery arena and is testament to the strength of our offerings and our ability to consistently deliver world-class customer service."

About Ceridian
Ceridian is changing the world of work by enabling companies to be free to succeed in their core business through its suite of innovative managed human resource solutions that include payroll and compensation, staffing, compliance, HR administration and employee effectiveness. Our wide range of HR, payroll, work-life and benefits services are designed to help companies maximize the value of their people. Ceridian Corporation (NYSE: CEN) is an information services company serving businesses and employees in the United States, Canada and Europe. For more information about the human resource outsourcing company's comprehensive array of solutions, visit www.ceridian.com or call (800) 729-7655.

(a)Gartner, Inc.: "Magic Quadrant for U.S. Midmarket Human Resource Management Systems, 2006," by James Holincheck and Kirsten L. Recknagel, January 25, 2006.

The Magic Quadrant is copyrighted January 25, 2006, by Gartner, Inc. and is reused with permission. The Magic Quadrant is a graphical representation of a marketplace at and for a specific time period. It depicts Gartner's analysis of how certain vendors measure against criteria for that marketplace, as defined by Gartner. Gartner does not endorse any vendor, product or service depicted in the Magic Quadrant, and does not advise technology users to select only those vendors placed in the "Leaders" quadrant. The Magic Quadrant is intended solely as a research tool, and is not meant to be a specific guide to action. Gartner disclaims all warranties, express or implied, with respect to this research, including any warranties of merchantability or fitness for a particular purpose.