Adecco SA: Disclosure of Shareholdings


CHESEREX, Switzerland, Aug. 17, 2005 (PRIMEZONE) -- In accordance with the relevant stock exchange regulations (Borsengesetz Art. 21), Adecco SA announces that as of August 17, 2005, a group represented by Capital Group Companies, Inc. (CGC) holds 9'376'256 or 5.00 percent of the shares and voting rights of Adecco SA. The group of shareholders holding the shares comprises the funds managed by Capital Research and Management Company ("CRMC"), and clients managed by Capital Guardian Trust Company ("CGTC"), Capital International Limited ("CIL"), Capital International Inc. ("CII"), and Capital International S.A. ("CISA").

Office Addresses:

 CGC: 333 South Hope Street, Los Angeles, CA, USA
 CRMC: 333 South Hope Street, Los Angeles, CA, USA
 CGTC: 11100 Santa Monica Blvd 15th Fl., Los Angeles, CA, USA
 CIL: 25 Bedford Str., London, England
 CII: 11100 Santa Monica Blvd 15th Fl., Los Angeles, CA, USA
 CISA: 3 Place des Bergues, 1201 Geneva, Switzerland


 Investor Relations:
 Tel: +41 44 878 8925

About Adecco

Adecco S.A. is a Fortune Global 500 company and the global leader in HR services. The Adecco Group network connects up to 700,000 associates with business clients each day through its network of 32,000 employees and over 6,500 offices in 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.

The Adecco Group comprises three divisions: Adecco Staffing, Ajilon Professional and LHH Career Services. In Adecco Staffing, the Adecco network focuses on flexible staffing solutions for global industries in transition, including automotive, banking, electronics, logistics and telecommunications; Ajilon Professional offers an unrivalled range of specialised branded businesses; LHH Career Services encompasses our portfolio of outplacement and coaching consultancy businesses.

Adecco S.A. is registered in Switzerland (ISIN: CH0012138605) 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 Marche (EURONEXT: ADE)