AUTOMATIC DATA PROCESSING INC — Director's Dealing 2011

Mar 9, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AUTOMATIC DATA PROCESSING INC (ADP)
CIK: 0000008670
Period of Report: 2011-03-09

Reporting Person: Capone Michael L (Corporate Vice President)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-03-09	Common Stock	S	6801.0000	$50.4000	Disposed	11881.1921	Direct
2011-03-09	Common Stock	M	2195.0000	$40.6971	Acquired	3405.7638	Indirect
2011-03-09	Common Stock	M	2160.0000	$40.2800	Acquired	5565.7638	Indirect
2011-03-09	Common Stock	M	1481.0000	$44.9568	Acquired	7046.7638	Indirect
2011-03-09	Common Stock	M	965.0000	$42.9431	Acquired	8011.7638	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-03-09	Stock Option (Right to Buy)	$42.9431	M	965.0000	Disposed	2017-01-25	Common Stock (965.0000)	Indirect
2011-03-09	Stock Option (Right to Buy)	$40.6971	M	2195.0000	Disposed	2016-01-26	Common Stock (2195.0000)	Indirect
2011-03-09	Stock Option (Right to Buy)	$40.2800	M	2160.0000	Disposed	2018-01-30	Common Stock (2160.0000)	Indirect
2011-03-09	Stock Option (Right to Buy)	$44.9568	M	1481.0000	Disposed	2011-10-21	Common Stock (1481.0000)	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Stock Option (Right to Buy)	$42.9431	2017-01-25	Common Stock (2963.0000)	2963.0000	Direct
Stock Option (Right to Buy)	$40.6971	2016-01-26	Common Stock (5816.0000)	5816.0000	Direct
Stock Option (Right to Buy)	$40.2800	2018-01-30	Common Stock (7200.0000)	7200.0000	Direct