SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN ISSUER

Pursuant to Rule 13a-16 or 15d-16

of the Securities Exchange Act of 1934

For the month of: ~~October~~January ~~2005~~2006

ADECCO SA

(Exact name of Registrant as specified in its charter)

Commission # 0-25004

Sägereistrasse 10

CH-8152 Glattbrugg

Switzerland

+41 1 878 88 88

(Address of principal executive offices)

[Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or 40-F]

Form 20-F X Form 40-F

[Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934]

Yes No X

Attached:

- ~~Adecco~~Disclosure ~~appoints Peter Searle as country manager~~ of UKshareholdings: ~~and~~Sonata ~~Ireland~~22.7%

~~Press~~Disclosure ~~Release~~of shareholdings

Adecco ~~appoints~~S.A. ~~Peter~~Chéserex: Pursuant ~~Searle~~to ~~as country~~art. ~~manager~~20 of UKthe Federal Act on Stock Exchanges and ~~Ireland~~Securities Trading, Adecco S.A. has received the following notification:

~~Chéserex,~~1. ~~Switzerland~~Name ~~– October 5, 2005: Adecco, the world’s largest human resources solutions provider, today announced the appointment~~ of ~~Peter Searle as~~ the ~~Group’s~~listed ~~new country manager of UK and Ireland.~~ company

~~In his new role, Peter (43) will be responsible for the combined business units of~~ Adecco ~~UK and Ireland and Ajilon UK, Ireland and Northern Europe~~S. ~~This is in line with the company’s strategy and recent initiatives aimed at expanding the business through market specialization~~A.

~~Peter has been with the Group for 17 years~~2. HeNumber ~~has extensive experience with both specialty~~ and ~~mainstream~~type ~~office brands in a number~~ of ~~European~~shares ~~countries,~~and inproportion ~~Asia Pacific as well as in North America. Most recently he has been the CEO~~ of ~~Ajilon~~voting ~~UK,~~rights ~~Ireland~~(total ~~and~~holdings ~~Northern Europe, where he was able to demonstrate excellent sales and profit growth~~ in ~~the business units under his control. Peter will work closely with the existing management structures.~~ percent)

~~Richard MacMillan~~42, ~~the current zone manager for United Kingdom~~465,494 ~~Ireland,~~Registered ~~South~~Shares ~~Africa~~Adecco ~~and~~SA; ~~India,~~22.7% ~~has decided to leave the Group as of January 2006 to pursue a career opportunity outside of Adecco~~(5.5%: WeCall ~~would~~Options; ~~like to thank Richard for his contribution over the last 8 years and wish him all the best for his new challenge~~17.2%: ~~Responsibility~~Put ~~for Adecco South Africa and India will be addressed separately prior to Richard’s departure~~Options).

~~Forward-looking~~3. ~~statements~~Identity of the involved parties

~~Information~~Sonata inSecurities ~~this release may involve guidance~~S.A., ~~expectations~~7, ~~beliefs,~~Val ~~plans~~Sainte-Croix, ~~intentions or strategies regarding the future. These forward~~L-~~looking~~1371 ~~statements~~Luxembourg ~~involve risks and uncertainties. All forward-looking statements included in this release are based on information available to Adecco S.A.~~ (~~the~~ “~~company~~Sonata”) as of the date of this release, and we assume no duty to update any such forward-looking statements. 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 temporary personnel; the resolution of US state unemployment tax reviews; the resolution of a French anti-trust investigation; the resolution of the US class action litigation; and any adverse developments in existing commercial relationships, disputes or legal proceedings.

~~The forward-looking statements in this release are not guarantees of future performance and actual results could differ materially from our current expectations~~4. ~~Numerous~~Indirect ~~factors~~sale, ~~could~~relationship ~~cause~~between ~~or contribute to such differences. Please refer to~~ the ~~company’s~~beneficial ~~most~~owner ~~recent Annual Report on Form 20-F~~ and ~~other reports filed with or submitted to~~ the ~~United~~direct ~~States Securities and Exchange Commission from time to time, for a further discussion of the factors and risks associated with our business.~~ vendor

~~About~~n.a. ~~Adecco~~

~~Adecco S~~5.A. isType aand ~~Fortune~~amount ~~Global~~of ~~500 company and~~ the ~~global~~equity ~~leader in HR services. The Adecco Group network connects up to 700~~securities,~~000~~ ~~associates with business clients each day through its network~~ of ~~over~~the 32conversion,~~000 employees~~ ~~and~~share ~~over~~purchase ~~6,500~~or ~~offices~~share insales 70rights ~~countries~~held and ~~territories around~~ the ~~world.~~voting ~~Registered~~rights inattached ~~Switzerland, and managed by a multinational team with expertise in markets spanning the globe, the Adecco Group delivers an unparalleled range of flexible staffing and career resources~~ to ~~corporate clients and qualified associates.~~ them

~~The~~(a) ~~Adecco~~Sonata ~~Group~~has ~~comprises~~the ~~three~~right ~~Divisions:~~to ~~Adecco~~exchange ~~Staffing,~~the ~~Ajilon~~Notes ~~Professional~~owned ~~and~~by ~~LHH~~it ~~Career~~for ~~Services.~~up Into ~~Adecco Staffing~~10,294,665 ~~the~~(5.5%) Adecco ~~network~~shares ~~focuses~~during onthe ~~flexible~~term ~~staffing~~of ~~solutions~~the ~~for~~Notes ~~global industries,~~(such ~~including automotive~~right, ~~banking,~~the ~~electronics,~~“Exchange ~~logistics and telecommunications~~Right”; ~~Ajilon~~Sonata’s Call Options).

(b)

Deutsche Bank AG has the right – in certain circumstances and subject to additional legal requirements relating to the enforcement of security interests – to deliver to Sonata up to 32,170,829 Adecco shares (17.2%; Sonata’s Put Options) in satisfaction of Deutsche Bank AG’s obligations under the Notes (the “Collateral Pass-Through Right”). Deutsche Bank would only be in a position to exercise their right if there is an event of default under the Bilateral Equity Linked Contract between Jacobs Venture AG and Deutsche Bank AG dated as of 6 December 2005.

6.	Time (date) of acquisition, sale or understanding through which the shareholding reached, exceeded or fell below the percentage threshold

Subscription Agreement between Deutsche Bank AG and Sonata, dated as of 23 December 2005, pursuant to which Deutsche Bank AG undertakes to issue, and Sonata undertakes to subscribe, the CHF 767,300,000 1.5 per cent Exchangeable Notes due 2010 exchangeable into shares of Adecco S.A. (the “Notes”) to be issued on 30 December 2005 by Deutsche Bank AG.

Page 1 of 2

~~Press~~Disclosure ~~Release~~of shareholdings

~~Professional offers an unrivalled range of specialized branded businesses; and LHH Career Services encompasses our portfolio of outplacement and coaching consultancy businesses~~7. Further remarks

~~Adecco~~Sonata ~~S.A.~~intends isto ~~registered~~issue inon ~~Switzerland~~30 December ~~(ISIN:~~2005 ~~CH0012138605)~~CHF ~~and~~767,300,000 ~~listed~~1.5 per oncent ~~the~~Collateralised ~~Swiss~~Equity-linked ~~Stock~~Limited ~~Exchange~~Liability ~~with~~Obligations ~~trading~~Bonds ondue 2010 ~~Virt-x~~Exchangeable ~~(SWX/VIRT-X:ADEN),~~for ~~the~~Ordinary ~~New~~Shares ~~York~~of ~~Stock~~Adecco ~~Exchange~~ S.A (~~NYSE:ADO~~the “Sonata Bonds”). ~~and~~The ~~Euronext~~proceeds ~~Paris~~of -the ~~Premier~~issuance ~~Marché~~of ~~(EURONEXT:~~the ~~ADE)~~Bonds will be used to acquire the Notes.

~~Contacts:~~A. Collateral Pass-Through Rights

Sonata’s obligations under the Sonata Bonds are secured by a charge over the Notes. Adecco ~~Corporate~~shares ~~Investor~~received ~~Relations~~by Sonata pursuant to the Collateral Pass-Through Right will be sold by the selling agent and the proceeds distributed to the holders of the Sonata Bonds, in each case as contemplated by, and in accordance with, the terms and conditions of the Sonata Bonds.

~~Investor~~B.~~relations@adecco.com~~ orExchange ~~+41~~Rights ~~(0) 44 878 8924~~

~~Adecco~~Pursuant to a further agreement between Deutsche Bank AG and Sonata, dated ~~Corporate~~as ~~Press~~of ~~Office~~23 December 2005:

~~Press~~1.~~office@adecco.com~~ orSonata ~~+41~~undertakes and agrees, upon receiving a valid exchange notice in respect of any Sonata Bond(0s) 44(the ~~878 8832~~“Sonata Exchange Bonds”) to exercise its Exchange Right in respect of a principal amount of Notes equal to the principal amount of Sonata Exchange Bonds by delivering an exchange notice; and

Sonata undertakes and agrees that it will not exercise the Exchange Right in respect of the Notes except and to the extent that the exchange right in respect of the Sonata Bonds has been exercised.

Consequentially, all Adecco shares acquired by Sonata through the exercise of Exchange Rights will be transferred to the holders of the Sonata Bonds.


Adecco S.A.		03 January 2006

Contact:

Investor Relations:

Tel: +41 44 878 89 25

E-Mail: investor.relations@adecco.com

About Adecco

Adecco S.A. is a Fortune Global 500 company and the global leader in HR services. The Adecco Group network connects more than 700,000 associates with business clients each day through its network of 33,000 employees and over 6,600 offices in 75 countries and territories around the world. Registered in Switzerland, and managed by a multinational team with expertise in markets spanning the globe, the Adecco Group delivers an unparalleled range of flexible staffing and career resources to corporate clients and qualified associates.

The Adecco Group comprises three Divisions: Adecco Staffing, Ajilon Professional and LHH Career Services. In Adecco Staffing, the Adecco network focuses on flexible staffing solutions for global industries in transition, including automotive, banking, electronics, logistics and telecommunications; Ajilon Professional offers an unrivalled range of specialised branded businesses; LHH Career Services encompasses our portfolio of outplacement and coaching consultancy businesses.

Adecco S.A. is registered in Switzerland (ISIN: CH0012138605) and listed on the Swiss Stock Exchange with trading on Virt-x (SWX/VIRT-X: ADEN), the New York Stock Exchange (NYSE: ADO) and Euronext Paris - Premier Marché (EURONEXT: ADE)

Page 2 of 2

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	~~ADECCO SA~~	ADECCO SA
	~~(Registrant)~~	(Registrant)
Dated: 5 October 2005	By:	/s/ Jim Fredholm
Dated: 3 January 2006		By:
		~~Jim Fredholm~~	Jim Fredholm
		~~Chief Financial Officer~~	Chief Financial Officer
Dated: 5 October 2005	By:	/s/ Hans R. Brütsch
Dated: 3 January 2006		By:
		~~Hans R. Brütsch~~	Hans R. Brütsch
		~~Corporate Secretary~~	Corporate Secretary

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