Rule 8.3 - ADECCO SA

FORM 8.3

    DEALINGS BY PERSONS WITH INTERESTS IN SECURITIES REPRESENTING 1% OR MORE
              (Rule 8.3 of the City Code on Takeovers and Mergers)


1.   KEY INFORMATION

Name of person dealing        BARCLAYS PLC
(Note 1)
Company dealt in              ADECCO SA
Class of relevant security    CHF1(REGD)
to which the dealings being
disclosed relate (Note 2)
Date of dealing               11 September 2008

2.   INTERESTS, SHORT POSITIONS AND RIGHTS TO SUBSCRIBE

(a)  Interests and short positions (following dealing) in the class of relevant
security dealt in (Note 3)

                            Long                     Short

                      Number       (%)         Number       (%)

(1) Relevant       3,095,059       1.64%      310,605      0.16%
securities
(2) Derivatives       18,340       0.01%      269,894      0.14%
(other than
options)
(3) Options and            0       0.00%            0      0.00%
agreements to
purchase/sell
Total              3,113,399       1.65%      580,499      0.31%

(b)  Interests and short positions in relevant securities of the company, other
     than the class dealt in (Note 3)

Class of                    Long                     Short
relevant
security:

                  Number              (%)   Number              (%)

(1) Relevant
securities

(2) Derivatives
(other than
options)

(3) Options and
agreements to
purchase/sell

Total


  (c)  Rights to subscribe (Note 3)

Class of relevant security:   Details



3.   DEALINGS (Note 4)

  (a)  Purchases and sales

Purchase/sale Number of Securities Price per unit
                                   (GBP)
Purchase      16,431               48.8541 CHF
Purchase      1,114                48.2370 CHF
Purchase      1,819                48.7399 CHF
Purchase      9,827                49.1248 CHF
Purchase      769                  50.6500 CHF
Purchase      294                  48.8400 CHF
Purchase      209                  49.4484 CHF
Purchase      2,902                49.4484 CHF
Purchase      211                  49.7400 CHF
Purchase      5,339                48.9723 CHF
Purchase      2,794                48.9723 CHF
Purchase      4,536                48.7952 CHF
Sale          988                  48.7809 CHF
Sale          360                  49.5989 CHF
Sale          9,333                49.6340 CHF
Sale          9,465                49.0955 CHF
Sale          1,967                48.8400 CHF
Sale          4,838                49.4916 CHF

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          988           48.7808
CFD            Long          9465          49.0954
CFD            Long          4838          49.4915
CFD            Long          360           49.5988
CFD            Long          9333          49.634
CFD            Short         1114          48.2369
CFD            Short         1819          48.7399
CFD            Short         4536          48.7952
CFD            Short         16431         48.8541
CFD            Short         9827          49.1248

(c)  Options transactions in respect of existing securities

(i)  Writing, selling, purchasing or varying

Product name,   Writing,          Number of          Exercise  Type, e.g.      Expiry   Option money
e.g. call       selling,          securities to      price     American,       date     paid/received
option          purchasing,       which the option             European etc.            per unit (GBP)
                varying etc.      relates (GBP)


(ii) Exercising

Product name, e.g.  Number of           Exercise price per
call option         securities          unit (Note 5)




(d)  Other dealings (including new securities) (Note 4)


Nature of transaction Details           Price per unit
(Note 8)                                (if applicable)
                                        (Note 5)




4.   OTHER INFORMATION


Agreements, arrangements or understandings relating to options or derivatives


Full details of any agreement, arrangement or understanding between the
person disclosing and any other person relating to the voting rights of
any relevant securities under any option referred to on this form or
relating to the voting rights or future acquisition or disposal of any
relevant securities to which any derivative referred to on this form is
referenced.  If none, this should be stated.

None


Is a Supplemental Form 8 attached? (Note 9)                 NO


Date of disclosure                         12 September 2008
Contact name                               Geoff Smith
Telephone number                           020 7116 2913
If a connected EFM, name of
offeree/offeror with which connected
If a connected EFM, state nature of
connection (Note 10)


Notes

The Notes on Form 8.3 can be viewed on the Takeover Panel's website at
www.thetakeoverpanel.org.uk