exhibit23.htm

We consent to the incorporation by reference in Registration Statement Nos. 33-46168, 333-10281, 333-10277, 333-110393, 333-146565, 333-147377, and 333-155382 on Form S-8 of our report dated August 25, 2010, relating to the consolidated financial statements and consolidated financial statement schedule of Automatic Data Processing, Inc. and subsidiaries (the “Company”), and the effectiveness of the Company’s internal control over financial reporting (which expresses an unqualified opinion), appearing in the Annual Report on Form 10-K of Automatic Data Processing, Inc. for the year ended June 30, 2010.