SCHEDULE 14A

(Rule 14a-101)

INFORMATION REQUIRED IN PROXY STATEMENT

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the
Securities Exchange Act of 1934 (Amendment No. )

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Filed by a Party other than the Registrant [_]

Check the appropriate box:
[_]  Preliminary Proxy Statement                  [_] Soliciting Material Under Rule
[_]  Confidential, For Use of the                        14a-12
       Commission Only (as permitted
       by Rule 14a-6(e)(2))
[_]  Definitive Proxy Statement
[x]  Definitive Additional Materials

Automatic Data Processing, Inc.
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(Name of Registrant as Specified In Its Charter)

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(Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)

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	AUTOMATIC DATA PROCESSING ** IMPORTANT NOTICE ** Regarding the Availability of Proxy Materials
	You are receiving this communication because you hold shares in the above company, and the materials you should review before you cast your vote are now available.
	This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. We encourage you to access and review all of the important information contained in the proxy materials before voting.
	AUTOMATIC DATA PROCESSING, INC.              PROXY SERVICES              P.O. BOX 9163              FARMINGDALE, NY 11735

Shareholder Meeting to be held on 11/11/08

Proxy Materials Available

Combined Document containing the Notice of 2008 Annual Meeting of Stockholders, the Proxy Statement and the Annual Report on Form 10-K

	PROXY MATERIALS - VIEW OR RECEIVE
	You can choose to view the materials online or receive a paper or e-mail copy. There is NO charge for requesting a copy. Requests, instructions and other inquiries will NOT be forwarded to your investment advisor.   To facilitate timely delivery please make the request as instructed below on or before 10/28/08.
	HOW TO VIEW MATERIALS VIA THE INTERNET
	Have the 12 Digit Control Number(s) available and visit: www.proxyvote.com
	HOW TO REQUEST A COPY OF MATERIALS
	1) BY INTERNET     -  www.proxyvote.com 2) BY TELEPHONE -  1-800-579-1639 3) BY E-MAIL*        -  sendmaterial@proxyvote.com *If requesting materials by e-mail, please send a blank e-mail with the 12 Digit Control Number (located on page 3) in the subject line.

 

 

 

 

 

 

 

 

 

 

 

 

 

See the Reverse Side for Meeting Information and Instructions on How to Vote

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		Meeting Information
		Meeting Type:	Annual
		Meeting Date:	11/11/08
		Meeting Time:	10:00 A.M. Eastern Time
		For holders as of:	09/12/08
		Meeting Location:
		Automatic Data Processing, Inc.'s Corporate Office
		One ADP Boulevard
		Roseland, New Jersey 07068
		Meeting Directions:
		For Meeting Directions Please Call:
		973-974-5000

	How To Vote
		Vote In Person
		Many shareholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. At the Meeting you will need to request a ballot to vote these shares.
		Vote By Internet
		To vote now by Internet, go to WWW.PROXYVOTE.COM.
		Use the Internet to transmit your voting instructions and for electronic delivery of information up until 11:59 P.M. Eastern Time the day before the meeting date. Have this notice in hand when you access the web site and follow the instructions.

 

 

 

 

 

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	Voting items
	The Board of Directors recommends a vote FOR the proposals (1) through (3) regarding:
	(1)		Election of Directors
			01)  Gregory D. Brenneman 02)  Leslie A. Brun 03)  Gary C. Butler 04)  Leon G. Cooperman 05)  Eric C. Fast 06)  R. Glenn Hubbard	07)  John P. Jones 08)  Frederic V. Malek 09)  Charles H. Noski 10)  Sharon T. Rowlands 11)  Gregory L. Summe 12)  Henry Taub
	(2)		Approval of the 2008 Omnibus Award Plan
	(3)		Appointment of Deloitte & Touche LLP
	The proxies will vote in their discretion upon any and all other matters which may properly come before the meeting or any adjournment thereof.

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