Wash. Rev. Code § 41.04.672
(1) The veterans' in-state service shared leave pool is created to allow employees to donate leave to be used as shared leave for:
(11) As used in this section:
(b) "Monthly salary" includes monthly salary and special pay and shift differential, or the monthly equivalent for hourly employees. "Monthly salary" does not include:
[ 2017 c 173 s 2.]