(1) The governing body of every local government entity establishing an individual self-insurance program shall adopt the self-insurance program by resolution or ordinance.

(2) The governing body of every local government entity participating in a joint self-insurance program shall adopt the interlocal agreement of the joint self-insurance program by resolution or ordinance. The resolution or ordinance shall include, but not be limited to, an acknowledgment that the entity shall be subject to assessments as required by the joint self-insurance program. Copies of each resolution or ordinance shall be retained by the joint self-insurance program and available for inspection by the state risk manager. The interlocal agreement, along with a list of members participating in the program, shall be published on the public website of each joint self-insurance program. The interlocal agreement and subsequent amendments shall be filed in accordance with requirements of chapter 39.34 RCW.