FORM 3
        
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

SUMME GREGORY L

2. Date of Event Requiring Statement (MM/DD/YYYY)
9/10/2007 

3. Issuer Name and Ticker or Trading Symbol

AUTOMATIC DATA PROCESSING INC [ADP]

(Last)        (First)        (Middle)

ONE ADP BOULEVARD

4. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__ X __ Director                            _____ 10% Owner
_____ Officer (give title below)          _____ Other (specify below)

(Street)

ROSELAND, NJ 07068       

(City)              (State)              (Zip)
5. If Amendment, Date Original Filed (MM/DD/YYYY)
 

6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person


Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)
2. Amount of Securities Beneficially Owned
(Instr. 4)
3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)
4. Nature of Indirect Beneficial Ownership
(Instr. 5)

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 4)
2. Date Exercisable and Expiration Date
(MM/DD/YYYY)
3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)
4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)
6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares

Explanation of Responses:

Remarks:
poa-summe.TXT
No securities are beneficially owned.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
SUMME GREGORY L
ONE ADP BOULEVARD
ROSELAND, NJ 07068
X



Signatures
James B. Benson (POA on file) 9/11/2007
** Signature of Reporting Person Date


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.

EXHIBIT 24

AUTOMATIC DATA PROCESSING, INC.

Authorization and Designation
to Sign and File
Section 16 Reporting Forms

The undersigned, GREGORY L. SUMME, a director of Automatic Data Processing, Inc., a Delaware corporation (the "Company"), does hereby authorize and designate JAMES B. BENSON to sign and file on my behalf any and all Forms 3, 4 and 5 relating to equity securities of the Company pursuant to the requirements of Section 16 of the Securities Exchange Act of 1934 ("Section 16"). This authorization, unless earlier revoked by the undersigned in writing, shall be valid until the undersigned's reporting obligations under Section 16 with respect to equity securities of the Company shall cease.

IN WITNESS WHEREOF, the undersigned has executed this Authorization and Designation this 10th day of September, 2007.

/s/ Gregory L. Summe
----------------------------------
GREGORY L. SUMME

Sworn and subscribed to
before me this 10th day
of September, 2007.

/s/ Mary Bernadette Woods
-------------------------------------
Mary Bernadette Woods
Notary Public of New Jersey
My Commission Expires Aug 29, 2011