ADECCO EXTENDS ITS GROUP EXECUTIVE COMMITTEE

Adecco extends its Group Executive Committee

Zurich, Switzerland, September 24, 2009: Adecco Group, the world leader in HR services, announces today an extension of its Group Executive Committee as of October 1, 2009.

The Adecco Group Executive Committee will be extended as of October 1, 2009. With this move, Adecco's markets will be represented in the Executive Committee which will enhance the successful execution of the Group's current strategy, which Adecco Group reconfirms. The company remains fully committed to its proactive cost-focused and disciplined pricing approach, while optimizing the service delivery model. This will help to increase the company's margins in the midterm. Adecco intends to grow the general staffing business and expand its professional staffing business, the latter also via acquisitions. Acquisition targets will always be assessed with financial discipline.

The Executive Committee of Adecco Group will consist of the following members:

• Patrick De Maeseneire, Chief Executive Officer

• Dominik de Daniel, Chief Financial Officer

• Christian Vasino, Chief Human Resources Officer

• Sergio Picarelli, Chief Sales Officer

• François Davy, Regional Head of France, Switzerland & India

• Tig Gilliam, Regional Head of North America

• Alain Dehaze, Regional Head of Northern Europe

• Mark du Ree, Regional Head of Japan & Asia

• Andreas Dinges, Regional Head of Germany & Austria

• Federico Vione, Regional Head of Italy & Eastern Europe

• Enrique Sanchez, Regional Head of Iberia & South America

• Peter Searle[1], Regional Head of UK & Ireland

Annalisa Gigante, Chief Business Development and Marketing Officer, will pursue her career outside the Adecco Group.

Patrick De Maeseneire, Chief Executive of the Adecco Group, said:" With this experienced team, all countries have a strong and balanced presence in the Executive Committee. The team will make sure we further implement our proven strategy, set the right priorities and seize the opportunities for the future growth of the Adecco Group. The members of the Executive Committee have already been with the Adecco Group between 3 and 22 years and have successfully managed a country or a region. Locally we have strong management teams running each country. Furthermore, I am delighted that Alain Dehaze has joined Adecco. Alain brings a profound staffing experience to the Group."

Resumes of each Executive Committee member can be accessed on:

http://www.adecco.com/AboutAdecco/Organisation/ExecutiveCommittee/

Contacts:

Adecco Corporate Investor Relations

Investor.relations@adecco.com or +41 (0) 44 878 89 89

Adecco Corporate Press Office

Press.office@adecco.com or +41 (0) 44 878 87 87

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. as of the date of this release, and we assume no duty to update any such forward-looking statements. 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. 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 internal and external personnel or clients; the potential impact of disruptions related to IT; any adverse developments in existing commercial relationships, disputes or legal and tax proceedings.

About the Adecco Group

The Adecco Group, based in Zurich, Switzerland, is the world's leading provider of HR solutions. With over 29,000 FTE employees and more than 5,800 offices, in over 60 countries and territories around the world, Adecco Group offers a wide variety of services, connecting more than 500,000 colleagues with over 100,000 clients every day. The services offered fall into the broad categories of temporary staffing, permanent placement, outsourcing, consulting and outplacement. The Adecco Group is a Fortune Global 500 company.

Adecco S.A. is registered in Switzerland (ISIN: CH0012138605) with listings on the SIX Swiss Exchange (ADEN) and on Euronext in France (ADE).