The employer must have the voluntary plan approved by the commissioner annually for the first three years. After the first three years, the employer is only required to have the approval if the employer makes changes to the plan that were not mandated by changes to state law.
RCW 50A.30.015
Voluntary plans—Reapproval.
2017 3rd sp.s. c 5 s 16
Official source: Washington State Legislature. Reproduced from public-domain Washington statutes; confirm against the official source for the current text. Not legal advice.