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               20 August 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       2,978,357       1.57%      406,520      0.21%
securities
(2) Derivatives       49,848       0.03%      256,872      0.14%
(other than
options)
(3) Options and            0       0.00%            0      0.00%
agreements to
purchase/sell
Total              3,028,205       1.60%      663,392      0.35%


(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      785                  49.9570 CHF
Purchase      780                  49.9570 CHF
Purchase      23,668               50.0823 CHF
Purchase      375                  50.3616 CHF
Purchase      1,062                50.0952 CHF
Sale          542                  50.4500 CHF
Sale          316                  50.3822 CHF
Sale          1,540                50.3161 CHF
Sale          23,146               50.0727 CHF
Sale          25,541               50.0027 CHF
Sale          1,076                50.4354 CHF
Sale          4,732                49.9831 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          4732          49.9831
CFD            Long          25541         50.0027
CFD            Long          20489         50.0677
CFD            Long          23146         50.0727
CFD            Long          1540          50.316
CFD            Long          316           50.3822
CFD            Long          1076          50.4353
CFD            Short         23668         50.0823
CFD            Short         1062          50.0952
CFD            Short         375           50.3616

(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                         21 August 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