February 20, 2006

(MINNEAPOLIS) - February 20, 2006 - Ceridian (www.ceridian.com), a leader in managed human resource outsourcing solutions, announced today that it has been
selected to the 2006 Global Outsourcing 100. Chosen by the International Association of Outsourcing Professionals (IAOP), the Global Outsourcing 100 recognizes the world's top outsourcing service providers based on applications judged by an independent panel of judges.

The list, devoted to today's leaders and tomorrow's rising stars, will be published in a special advertising section of the April 3, 2006 edition of Fortune® magazine. Ceridian will be listed as one of the 65 "leaders" in the rankings. "Leaders" are considered to be large, well-established companies.

IAOP's panel of independent judges evaluated all applicants based on four criteria:

1. Size and growth in revenue, employees, centers and countries served.


2. Customer experience as demonstrated through the value being created with
   the company's top customers.


3. Depth and breadth of competencies as demonstrated through industry
   recognition, relevant certifications, and investment in the development of
   people, processes, and technologies.


4. Management capabilities as reflected in the experience and
   accomplishments of the business's top leaders and its investment in
   management systems that ensures outsourcing success.

According to Ronald L. Turner, chairman, president and chief executive officer of Ceridian, "Being recognized as one of the top global outsourcing service providers for 2006 is a tremendous honor that speaks to our position as one of the top HR outsourcing companies. We view these rankings as a statement of how strong our offerings are as well as our ability to provide world-class customer service through our operations in the U.S., Canada and Europe."

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.