October 4, 2005

Tulsa, Oklahoma . . . Unit Corporation (NYSE – UNT) announced today that on October 3, 2005, Mr. Mark Monroe, a director of the Company, notified the Company and its Board of Directors that he had accepted the positions of President and Chief Operating Officer of Continental Resources, a private oil and gas company and, as a result, was resigning from the Company's Board of Directors. Mr. Monroe's resignation was not in connection with any known disagreement with the Company on any matter relating to the Company’s operations, policies or practices.

Mr. John G. Nikkel, Chairman, stated “Mark's knowledge of our industry and his various contributions to our board have been greatly appreciated.”

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Unit Corporation is a Tulsa-based, publicly held energy company engaged through its subsidiaries in oil and gas exploration, production, contract drilling and natural gas gathering and processing. Unit’s Common Stock is listed on the New York Stock Exchange under the symbol UNT. For more information about Unit Corporation, visit its website at http://www.unitcorp.com.