AUTOMATIC DATA PROCESSING INC — Director's Dealing 2006

Mar 23, 2006

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AUTOMATIC DATA PROCESSING INC (ADP)
CIK: 0000008670
Period of Report: 2006-03-23

Reporting Person: DYKSTRA KAREN E (Corporate Vice President)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2006-03-23	Common Stock	M	5000	$39.2250	Acquired	43806.8220	Direct
2006-03-23	Common Stock	M	2625	$43.5000	Acquired	54431.8220	Direct
2006-03-23	Common Stock	S	15625	$46.8300	Disposed	38806.8220	Direct
2006-03-23	Common Stock	M	8000	$42.4150	Acquired	51806.8220	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2006-03-23	Stock Option (Right to Buy)	$	M	8000	Disposed	1988-08-08	Common Stock (8000.0000)	Direct
2006-03-23	Stock Option (Right to Buy)	$	M	2625	Disposed	1988-08-08	Common Stock (2625.0000)	Direct
2006-03-23	Stock Option (Right to Buy)	$39.2250	M	5000	Disposed	2013-11-10	Common Stock (5000.0000)	Direct

Footnotes

F1: Exerciseable price varies

F2: Vests equally over 5 years beginning in 2005