Wash. Rev. Code § 4.100.040
*** CHANGE IN 2026 *** (SEE 5520-S.SL) ***
(1) In order to file an actionable claim for compensation under this chapter, the claimant must establish by documentary evidence that:
(b)
(c)
(2) In addition to the requirements in subsection (1) of this section, the claimant must state facts in sufficient detail for the finder of fact to determine that:
(6)
[ 2013 c 175 s 4.]