EX-32.1 4 exhibit321ceoq1fy16.htm EXHIBIT 32.1
EXHIBIT 32.1
CERTIFICATION OF CHIEF EXECUTIVE OFFICER
CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
In connection with the Quarterly Report of Automatic Data Processing, Inc. (the "Company") on Form 10-Q for the fiscal quarter ended September 30, 2015 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Carlos A. Rodriguez, President and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1) | The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) | The information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Company.

Date: | November 5, 2015 | /s/ Carlos A. Rodriguez
|  | Carlos A. Rodriguez
|  | President and Chief Executive Officer