Wash. Rev. Code § 41.26.567
(2) Before July 1, 2026, a member may elect to establish credit in plan 2 under this section. Such election must be filed in writing with the department of retirement systems by June 30, 2026. The elected period must be in monthly increments beginning with the oldest service.
(a) To establish service under this section, the member must pay the actuarial value of the resulting increase in their benefit in a manner defined by the department:
[ 2023 c 77 s 4.]
Effective date—2023 c 77: See note following RCW 41.26.565.