AUTOMATIC DATA PROCESSING INC — Director's Dealing 2010

Mar 23, 2010

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: AUTOMATIC DATA PROCESSING INC (ADP)
CIK: 0000008670
Period of Report: 2010-03-19

Reporting Person: Bonarti Michael A (Staff Vice President)

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	7277	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Stock Option (Right to Buy)	$29.3805	2012-07-21	Common Stock (4444)		Direct
Stock Option (Right to Buy)	$31.2802	2013-05-12	Common Stock (6585)		Direct
Stock Option (Right to Buy)	$35.7404	2013-11-10	Common Stock (3319)		Direct
Stock Option (Right to Buy)	$37.58	2019-02-09	Common Stock (2800)		Direct
Stock Option (Right to Buy)	$39.3987	2015-01-26	Common Stock (4390)		Direct
Stock Option (Right to Buy)	$39.6356	2011-09-20	Common Stock (925)		Direct
Stock Option (Right to Buy)	$40.28	2018-01-30	Common Stock (5600)		Direct
Stock Option (Right to Buy)	$40.6971	2016-01-26	Common Stock (4664)		Direct
Stock Option (Right to Buy)	$40.7	2020-02-08	Common Stock (5000)		Direct
Stock Option (Right to Buy)	$42.3007	2014-05-10	Common Stock (6639)		Direct
Stock Option (Right to Buy)	$42.9431	2017-01-25	Common Stock (3073)		Direct
Stock Option (Right to Buy)	$45.8406	2012-05-05	Common Stock (5761)		Direct
Stock Option (Right to Buy)	$46.3554	2010-05-09	Common Stock (4938)		Direct
Stock Option (Right to Buy)	$48.1185	2011-05-14	Common Stock (5487)		Direct