Okla. Stat. tit. 19, § 19-865.55: Commission membership

The commission shall consist of three (3) members appointed by

the board of county commissioners and the chairman of the board of

county commissioners or a member of the board of county

commissioners appointed by the chairman and one member to be

appointed by the mayor of each incorporated city or town having a

population of one thousand or more according to the last federal

census. Members appointed by the board shall serve a term of four

(4) years, except that the respective terms of the first three

appointed shall be for terms of four (4) years. All members of the

commission shall serve as such without compensation. Each appointed

member shall be a resident of the area included within the

jurisdiction of the commission for a period of three (3) years or

more immediately preceding appointment and shall hold no other

municipal or county office. Vacancies occurring otherwise than

through the expiration of term shall be filled for the unexpired

term.

A member of such commission, once qualified, can thereafter be

removed during his term of office only for cause and after a hearing

held before the governing body by which he was appointed.