July 26, 2006

MINNEAPOLIS, MN, July 26, 2006 - Ceridian Corporation (NYSE: CEN) today announced that it has entered into an agreement to sell the major portion of its Retirement Plan Services (RPS) recordkeeping and administration business to The Newport Group, a leading retirement services provider based in Heathrow, Florida.

As part of this agreement, approximately 1,100 companies for whom Ceridian was providing defined contribution and defined benefit retirement plan administration services will become customers of Newport, effective immediately. Ceridian will also form an alliance agreement with Newport that will enable Ceridian to continue to make retirement plan solutions available to its clients as part of its suite of HR outsourcing solutions. Ceridian will retain and continue to provide retirement plan administration services to its current total human resources outsourcing (HRO) clients. The transaction is expected to close at the end of July.

"We are very pleased to have reached this agreement with Newport because it allows us to continue offering retirement services through a strategic alliance with a proven leader in retirement plan solutions," said Ronald L. Turner, president and chief executive officer of Ceridian Corporation. "It also enables us to focus our efforts on strengthening our core operations, positioning us for greater flexibility to meet the growing and changing needs of our customers."

According to Newport chief executive officer Peter S. Cahall, "There are several important factors which made this acquisition attractive to Newport. Because Newport and Ceridian RPS have the same recordkeeping technology and service delivery systems, there will be a seamless transition of Ceridian RPS clients to the Newport platform. In addition, we are retaining nearly all of the Ceridian RPS account management, compliance, and operations staff, and these employees will ensure continuity of client service."

Cahall went on to note that "this acquisition is part of our strategy to accelerate our growth in key business lines. It will add significant scale to Newport and further expand our national reach, placing us in the top ranks of retirement plan providers."

About The Newport Group
Founded in 1984, The Newport Group is a leading retirement services and asset management firm-specializing in the creative design, funding, and administration of qualified and non-qualified retirement plans, as well as co-fiduciary investment advisory services. Through its strategic alliances and joint ventures with other firms in the financial services arena, Newport is uniquely positioned to satisfy the distinct financial needs of employers and employees, and has done so for hundreds of the country's largest and best-known companies.

About Ceridian
Ceridian Corporation (www.ceridian.com) is an information services company serving businesses and employees in the United States, Canada and Europe. Ceridian is one of the top human resources outsourcing companies in each of its markets, and offers a broad range of human resource services, including payroll, benefits administration, tax compliance, HR information systems and employee advisory programs. Through its Comdata subsidiary, Ceridian is a major payment processor and issuer of credit cards, debit cards and stored value cards, primarily for the trucking and retail industries in the United States.

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. The statements regarding Ceridian Corporation contained in this release that are not historical in nature, particularly those that utilize terminology such as "may," "will," "should," "likely," "expects," "anticipates," "estimates," "believes" or "plans," or comparable terminology, are forward-looking statements based on current expectations and assumptions, and entail various risks and uncertainties that could cause actual results to differ materially from those expressed in such forward-looking statements. Important factors known to Ceridian that could cause such material differences are identified and discussed from time to time in Ceridian's filings with the Securities and Exchange Commission, including matters arising from the SEC investigation, the prior restatements of our financial statements, the investigation conducted by the Audit Committee, the pending shareholder litigation, the failure to timely comply with Section 404 of the Sarbanes-Oxley Act of 2002, volatility associated with Comdata's fuel price derivative contracts and those factors which are discussed in Ceridian's Annual Report on Form 10-K, for the year ended December 31, 2005 and Quarterly Report on Form 10-Q, for the period ended March 31, 2006, which factors are also incorporated herein by reference.

Ceridian undertakes no obligation to correct or update any forward-looking statements, whether as a result of new information, future events or otherwise. You are advised, however, to consult any future disclosure Ceridian makes on related subjects in future reports to the SEC.