THE CORPORATE LIBRARY

Related Party Transactions and Outside Related Director Information

Paychex, Incorporated (PAYX)

8/31/2005 Proxy Information Mr. Tucci is the President and Chief Executive Officer of EMC Corporation. During fiscal 2005, the Company purchased through negotiated transactions approximately $2.5 million of data processing equipment and software from EMC Corporation. Mr. Golisano is the owner of Rochester Aviation, Inc. from which the Company purchased approximately $86,000 of aviation services in fiscal 2005. Mr. Golisano also owns the Buffalo Sabres of the National Hockey League, for which the Company provided an insignificant amount of payroll and other human resource services in fiscal 2005. Mr. Golisano is a member of the Board of Directors of Iron Mountain Incorporated from which the Company purchased approximately $130,000 of services in fiscal 2005.

Mr. Sebo retired as Senior Vice President/Director of Eastern Operations of Paychex, Inc. in December 1994, where he also held many sales and operations positions.

8/31/2004 Proxy Information

Mr. Tucci is the President and Chief Executive Officer of EMC Corporation. During fiscal 2004, Paychex, Inc. purchased through negotiated transactions approximately $1.2 million of data processing equipment and software from EMC Corporation.

Mr. Clark retired as Senior Vice President of Finance, Secretary and Treasurer of Paychex, Inc. in October 1996.

Mr. Sebo retired as Senior Vice President/Director of Eastern Operations of Paychex, Inc. in December 1994, where he also held many sales and operations positions. In 1974, he started his own Paychex franchise operation in Cleveland, OH.

Mr. Golisano is the owner of Rochester Aviation, Inc. from which Paychex, Inc. purchased approximately $120,000 of aviation services in fiscal 2004. Mr. Golisano also owns the Buffalo Sabres of the National Hockey League, for which Paychex, Inc. provided payroll and other human resource services. In fiscal 2004, the Buffalo Sabres paid the Company approximately $67,000 for these services.

8/22/2003 Proxy Information

Mr. Tucci is the President and Chief Executive Officer of EMC Corporation. During fiscal 2003, the Company purchased through negotiated transactions approximately $2.6 million of data processing equipment and software from EMC Corporation. Mr. Golisano is the owner of Rochester Aviation, Inc. from which the Company purchased approximately $41,000 of aviation services in fiscal 2003.