Me. Rev. Stat. tit. 30-A, § 522

The County Personnel Board shall be composed of 3 or 5 members who may not be county officers or employees. The county commissioners shall appoint the members. The term of office of the members is 3 years, except that for the first appointment approximately 1/3 of the members shall be appointed for one year, approximately 1/3 for 2 years and the remainder for 3 years. Vacancies shall be filled for the remainder of the term of the vacated appointment. The board shall elect its own chair annually. The members may receive $25 a day for the time actually spent in the discharge of their duties and their necessary expenses.