Tim Posey is chair of Hall Estill's Indian Law practice and has an AV rating through Martindale-Hubbell. He is ranked Band 1 by Chambers USA as one of the best Native American lawyers in the state of Oklahoma, has been named a local litigation star by Benchmark Litigation and has been recognized as a Best Lawyer in America in Native American Law.
- University of Oklahoma College of Law (J.D., 1989)
- University of Oklahoma (B.A., with distinction, 1986)
- Cherokee Nation
- Muscogee (Creek) Nation
- U.S. Court of Appeals for the Tenth Circuit
- U.S. District Court for the Eastern, Northern and Western Districts of Oklahoma
- 2005 - Present Hall Estill
- YMCA, Owasso, Advisory Board member
- Oklahoma Bar Association
- Tulsa County Bar Association
- Muscogee (Creek) Nation Bar Association
- Cherokee Nation Bar Association
- Supreme Court Justice, Sac & Fox Nation Supreme Court
- Member, Oklahoma Captive Insurance Advisory Board
- Presenter - Doing Business In Indian Country, 2003 & 2004, Oklahoma State University - Okmulgee Campus, "U.S. Supreme Court Update" and "Conducting Business Transactions with Indian Tribes."
- Presenter - Sovereignty Symposium, 1997, 1998, 2000 & 2001, topics included, "Jurisdictional issues involving Tribes, Employment Law in Indian Country, Gaming, Tribal Court Jurisdiction and Application of the National Labor Relations Act to Indian Tribes."
- Presenter - National Association of Professional Employer Organizations, "Unique Issues in Representing Professional Employer Organizations," National Conference, Washington, D.C., March 1999.
- Author - "Unique Issues in Representing PEO's" NAPEO Journal, Washington, D.C., March 1999.