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               19 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       3,008,580       1.59%      408,232      0.22%
securities
(2) Derivatives       29,506       0.02%      288,265      0.15%
(other than
options)
(3) Options and            0       0.00%            0      0.00%
agreements to
purchase/sell
Total              3,038,086       1.61%      696,497      0.37%


(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      621                  50.1004 CHF
Purchase      268                  49.5600 CHF
Purchase      903                  49.9789 CHF
Purchase      1,107                49.9789 CHF
Purchase      410                  49.7400 CHF
Purchase      9,231                50.1012 CHF
Purchase      1,622                50.1013 CHF
Purchase      1,208                50.1009 CHF
Purchase      584                  49.9789 CHF
Purchase      8,971                49.9171 CHF
Purchase      4,692                49.9417 CHF
Purchase      2,370                49.9198 CHF
Sale          15,792               49.9049 CHF
Sale          250                  50.0500 CHF
Sale          1,035                50.0230 CHF
Sale          3,398                50.0482 CHF
Sale          1,089                49.7256 CHF
Sale          2,025                49.7400 CHF
Sale          9,375                50.0216 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          1089          49.7255
CFD            Long          15792         49.9049
CFD            Long          9375          50.0215
CFD            Long          1035          50.0229
CFD            Long          6818          50.0286
CFD            Long          3398          50.0481
CFD            Short         8971          49.917
CFD            Short         2370          49.9197
CFD            Short         4692          49.9417

(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                         20 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