Oregon Revised Statutes Public Health and Safety § 456.100

(1) The commissioners of a five-member authority who are first appointed shall serve terms as follows:

(2) The commissioners of a seven-member authority who are first appointed shall serve terms as follows:

(3) The commissioners of a nine-member authority who are first appointed shall serve terms as follows:

(4) Thereafter, commissioners shall be appointed by resolution in the same manner as their original appointment for a term of office of four years except that all vacancies shall be filled for the unexpired term. A commissioner shall hold office until a successor has been appointed and qualified.

(5) A commissioner shall receive no compensation for services, but shall be entitled to the necessary expenses, including traveling expenses, incurred in the discharge of the duties of the commissioner.