Holding(s) in Company

Holding(s) in Company

Zurich, Switzerland, 19 March 2013: Pursuant to Art. 9 and 21 of the
SESTO-FINMA, Adecco S.A. discloses the following:

1. Name of the listed company: Adecco S.A.

2. Proportion of voting rights held by Adecco S.A. (total holdings in
percent): see table under item 5.

3. Identity of those involved: Adecco S.A.

4. Nature of the agreement: Group of Companies

5. Number and type of shares/rights:

Type of rights

                                                   Number of
I. Purchase positions         Type       Number of voting rights Percentage of
                                         rights                  voting rights
                                                   Percentage of
I.1. Equity securities                   5'808'211 5'808'211     3.07%
Total category I.                                  5'808'211     3.07%
II. Sale positions
Underlying; Ratio; Strike
CHF; Maturity; Settlement
Adecco; 1:1; 60; June 2013;   Short call 2'550     2'550         <0.01%
physical                      option
Adecco; 1:1; 78.5; May 2014;  Short call 6'000     6'000         <0.01%
physical                      option
Adecco share awards; 1:1;     Share
March 2013; physical (share   awards     295'305   295'305       0.16%
awards)
Adecco share awards; 1:1;     Share
March 2014; physical (share   awards     255'892   255'892       0.14%
awards)
Adecco share awards; 1:1;     Share
March 2014; physical (share   awards     183'722   183'722       0.10%
awards)
Total Category II.                                 743'469       0.39%

6. Facts/circumstances triggering the obligation to notify:
Share repurchases on second trading line

7. Time (date) of acquisition, sale or understanding through which the
shareholding reached, exceeded or fell below the percentage threshold: 13
March 2013

8. Representative: Adecco management & consulting S.A.
Sägereistrasse 10, CH-8152 Glattbrugg
Hans R. Brütsch, Phone +41 44 878 88 85,
Fax +41 44 829 88 85

Contact:

Adecco Investor Relations
Tel: +41 44 878 89 89
E-Mail: investor.relations@adecco.com

Disclosure of shareholdings (PDF)

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Provider                  Channel         Contact
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www.tensid.ch             www.newsbox.ch  marco@tensid.ch
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