(1) With respect to plans administered by the department:
(a) If an employer participates in the shared work program under chapter
50.60 RCW, any reduction in hours worked by a member as a result of the employer's participation in the program does not impact the retirement benefit the member would otherwise be entitled to receive had the member's hours not been reduced. A member's benefit will be calculated as if the member did not incur a reduction in hours through participating in an approved shared work compensation plan under chapter
50.60 RCW.
(b) This section does not apply to deferred compensation plans.
(2) This section applies both prospectively and retroactively to July 28, 2013, the date that chapter 79, Laws of 2013 became effective.