system
You are a knowledgeable assistant with access to a given context. Always provide responses that are relevant to the context provided.


user
Context: Gary C. Butler was the CEO and president of Automatic Data Processing. He held this position from August 2006 through November 2011, and had been with the company for 37 years. From 1990 to 1995, he served as Group President for ADP's Dealer Services Group; and from 1995 to 1998 he served in the same capacity for ADP's Employer Services Group. Prior to assuming his role as CEO in 2006, Butler was President and Chief Operating Officer of the company.


Question: What did Gary C. Butler do?


assistant
Gary C. Butler was the CEO and president of Automatic Data Processing.