(a) A participating member is immediately and fully vested in that member's contributions and related earnings. (b) A member is fully vested in the employer contributions made on that member's behalf, and related earnings, after five years of service. A member is partially vested in the employer contributions made on that member's behalf, and the related earnings, in the ratio of (1) 25 percent with two years of service; (2) 50 percent with three years of service; and (3) 75 percent with four years of service.
Alaska Legal Code