Adecco secures 82.6% of DIS AG by end of offer period

Additional acceptance period from March 13 to 27, 2006

Chéserex, Switzerland - March 13, 2006: The Adecco Group, the worldwide leader in Human Resource services, announced today that on March 8, 2006, it successfully concluded the voluntary public offer for DIS Deutscher Industrie Service AG, Germany’s leading professional staffing services company. Combined with previously announced purchases, Adecco secured approximately 82.6% of DIS AG’s capital.

Shareholders of DIS AG who have not sold their shares yet, will have a last opportunity to tender them at EUR 58.50 per share during the compulsory additional acceptance period from March 13 to March 27, 2006.

Klaus J. Jacobs, Chairman and CEO of Adecco commented: “The successful conclusion of the DIS transaction represents a major step forward in strengthening Adecco’s professional services business and a huge opportunity for DIS, its clients and its employees”.

About Adecco
Adecco S.A. is a Fortune Global 500 company and the global leader in HR services. The Adecco Group network connects over 700,000 associates with business clients each day through its network of over 33,000 employees and 6,600 offices in over 70 countries and territories around the world. Registered in Switzerland, and managed by a multinational team with expertise in markets spanning the globe, the Adecco Group delivers an unparalleled range of flexible staffing and career resources to corporate clients and qualified associates.

Adecco S.A. is registered in Switzerland (ISIN: CH001213860) and listed on the Swiss Stock Exchange with trading on Virt-x (SWX/VIRT-X: ADEN), the New York Stock Exchange (NYSE: ADO) and Euronext Paris - Premier Marché (EURONEXT: ADE).

Forward-looking statements
Information in this release may involve guidance, expectations, beliefs, plans, intentions or strategies regarding the future. These forward-looking statements involve risks and uncertainties. All forward-looking statements included in this release are based on information available to Adecco S.A. (the “company”) as of the date of this release, and we assume no duty to update any such forward-looking statements. Factors that could affect the company’s forward-looking statements include, among other things: global GDP trends and the demand for temporary work; changes in regulation of temporary work; intense competition in the markets in which the company competes; changes in the company’s ability to attract and retain qualified temporary personnel; the resolution of US state unemployment tax reviews; the resolution of a French anti-trust investigation; the resolution of the US class action litigation; and any adverse developments in existing commercial relationships, disputes or legal proceedings.

The forward-looking statements in this release are not guarantees of future performance and actual results could differ materially from our current expectations. Numerous factors could cause or contribute to such differences. Please refer to the company’s most recent Annual Report on Form 20-F and other reports filed with or submitted to the United States Securities and Exchange Commission from time to time, for a further discussion of the factors and risks associated with our business.

This is not an offer to acquire or sell any securities.

Contact Information

Adecco Corporate Press Office

Adecco S.A.

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