Oklahoma State University (Bachelor of Arts, 1974). University of Oklahoma College of Law (Juris Doctor, 1977).
Working as a partner of MICHAEL J. HESTER, Incorporated. Admitted to the bar, 1977, Oklahoma. Major clients of DONALD CHAFFIN: First National Bank and Trust Company, Ardmore, Oklahoma. Atlantic Richfield Company.
Union Oil Company of California.
Hertz, Corporation; Keith F. Walker. T C. Craighead; Boswell Energy Corporation
Comadre Dwilling And Exploration Company, Holden Energy Corporation Texaco. Incorporated.; Aetna Life Insurance Company.
Allstate Insurance Company.
American States Insurance Company. American Title Insurance Company. Chubb Group; Cimarron Insurance Company, Economy Fire and Casualty Company, Employers Mutual Insurance Company
Grain Dealers Mutual Insurance Company.
The Hartford; Home Insurance Company Indemnity Underwriters Insurance Company.
Lawyers Title Insurance Corporation. Preferred Risk Insurance Company
Oklahoma Farmers Union Mutual Insurance Company.
Prudential Insurance Company of America. Ranger Insurance Company. Sentry Dairyland Insurance Company Shelter Insurance Company.
United Services Automobile Association.
United States.F. & G. Universal Underwriters Insurance Company.
Member: Carter County (President, 1981) and Oklahoma (Associate Bar Examiner, 1986-1996. Member, Board of Bar Examiners, 1996) Bar Associations.