AUTOMATIC DATA PROCESSING INC — Director's Dealing 2004

Dec 21, 2004

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AUTOMATIC DATA PROCESSING INC (ADP)
CIK: 0000008670
Period of Report: 2004-12-13

Reporting Person: SHELDON DAN (Corporate Vice President)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2004-12-13	Common Stock	S	200	$45.0789	Disposed	15225.2380	Direct
2004-12-13	Common Stock	S	800	$45.0689	Disposed	14425.2380	Direct
2004-12-21	Common Stock	M	16000	$14.6875	Acquired	30425.2380	Direct
2004-12-21	Common Stock	S	16000	$44.3200	Disposed	14425.2380	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2004-12-21	Stock Option (Right to Buy)	$	M	16000	Disposed	1988-08-08	Common Stock (16000.0000)	Direct

Footnotes

F1: Exerciseable price varies

F2: Exercisable date varies

F3: Expiration dates vary