Adecco S.A. reports a shareholding of its own shares of 8.00%

Corporate news announcement processed and transmitted by Hugin AS. The issuer is solely responsible for the content of this announcement. ---------------------------------------------------------------------- -------------- Zurich, Switzerland, 2 July 2009: Pursuant to art. 9 and 17 of the Stock Exchange Ordinance-FBC, Adecco S.A. discloses the following: As of June 30, 2009, Adecco S.A. represented by Adecco management & consulting S.A, Saegereistrasse 10, CH-8152 Glattbrugg, Switzerland, is holding 8.84% of the share capital of the company in shares and derivatives as purchase positions (of which 8.00% are equity [registered shares]), and 6.15% as sale positions. For further information please refer to the attached PDF document. Contact: Investor Relations: Tel: +41 44 878 89 89 E-Mail: --- End of Message --- Adecco SA Sagereistrasse 10 Glattbrugg Switzerland WKN: 922031; ISIN: CH0012138605; Index: SLCI, SMI, SPI, SMIEXP; Listed: Main Market in SIX Swiss Exchange;