Okla. Stat. tit. 5A , app 1 § 2
If a member's dues to the Association remain unpaid after February 15 in any calendar year, there shall be added thereto an expense charge of $100.00. As soon as possible after February 15 in any calendar year, the Executive Director shall send by registered or certified mail, with return receipt requested, written notice to each member of the Association whose dues remain unpaid for that year, stating the amount due, with the expense charge, and demanding payment by a date specified therein, which shall be not less than thirty (30) days after mailing of the notice. The notice shall be addressed to the member at his last address shown on the records of the Association. If payment of dues and expense charge is not received from a member within the time specified in the notice sent him, the Board of Governors shall file application with the Supreme Court recommending suspension of the delinquent's membership and, upon order of the Court, he shall be so suspended, and shall not thereafter practice law in this state until reinstated as provided herein.
Okla. Stat. tit. 5A , app 1 § 2