AUTOMATIC DATA PROCESSING INC — Director's Dealing 2005

Aug 24, 2005

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AUTOMATIC DATA PROCESSING INC (ADP)
CIK: 0000008670
Period of Report: 2005-08-24

Reporting Person: BENSON JAMES B (Corporate Vice President)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2005-08-24	Common Stock	M	40000	$19.2500	Acquired	88479.8320	Direct
2005-08-24	Common Stock	S	11535	$44.0300	Disposed	76944.8320	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2005-08-24	Stock Option (Right to Buy)	$	M	40000	Disposed	1988-08-08	Common Stock (40000.0000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	2632.0000	Indirect

Footnotes

F1: Exerciseable price varies