Washington Revised Code Title 41. Public Employment, Civil Service, and Pensions § 41.05.050. Contributions for employees and dependents

(1)(a) Every employer and employer group as defined in RCW 41.05.011 shall provide contributions to insurance and health care plans for its employees and their dependents, the content of such plans to be determined by the authority.

(b) Contributions paid by employer groups for their employees, shall include an amount determined by the authority to pay such administrative expenses of the authority as are necessary to administer the plans for employees of those groups.

(4)(a) For all groups of educational service district employees enrolling in plans developed by the public employees' benefits board after January 1, 2020, and until January 1, 2024, the authority shall collect from each participating educational service district an amount equal to the composite rate charged to state agencies, plus an amount equal to the employee premiums by plan and by family size as would be charged to employees, only if the authority determines that this method of billing the educational service districts will not result in a material difference between revenues from educational service districts and expenditures made by the authority on behalf of educational service districts and their employees. The authority may collect these amounts in accordance with the educational service district fiscal year, as described in RCW 28A.505.030.