From 1980 through 1997 Regan held a series of progressively more responsible positions for Harrah's Entertainment and its prior parent companies, Holiday Corporation and The Promus Companies. From 1991 through 1997 he served as vice president and corporate controller, with major roles in many strategic decisions including the spin-off of Promus Hotels into a separate public company. As vice president and corporate controller, Mr. Regan was also responsible for short-and long-range planning, investment analysis, accounting, purchasing, payroll and accounts payable functions. Prior to his time in the Harrah's Entertainment corporate office Mr. Regan spent eleven years in a variety of finance related management positions at the Harrah's offices in Reno, Nevada, as well as Harrah's Lake Tahoe. Mr. Regan received a Bachelor of Arts degree in accounting as well as a Bachelor of Arts and a Master of Arts degree in Sociology from San Diego State University.