(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.
(2) To account for any increased cost of benefit plans developed by the board, the authority may develop a rate surcharge applicable to participating employer groups as defined in RCW 41.05.011.
(3) The contributions of any: (a) Department, division, or separate agency of the state government; (b) county, municipal, or other political subdivisions; (c) any tribal government as are covered by this chapter; and (d) school districts, educational service districts, and charter schools, shall be set by the authority, subject to the approval of the governor for availability of funds as specifically appropriated by the legislature for that purpose. Insurance and health care contributions for ferry employees shall be governed by RCW 47.64.270.
(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.
(b)(i) Beginning January 1, 2020, all school districts, represented employees of educational service districts, and charter schools shall commence participation in the school employees' benefits board program established under RCW 41.05.740. All school districts, represented employees of educational service districts, charter schools, and all school district employee groups participating in the public employees' benefits board plans before January 1, 2020, shall thereafter participate in the school employees' benefits board program administered by the authority. All school districts, represented employees of educational service districts, and charter schools shall provide contributions to the authority for insurance and health care plans for school employees and their dependents. These contributions must be provided to the authority for all eligible school employees eligible for benefits under RCW 41.05.740(6)(d), including school employees who have waived their coverage; contributions to the authority are not required for individuals eligible for benefits under RCW 41.05.740(6)(e) who waive their coverage.
(ii) Beginning January 1, 2024, all educational service districts shall participate in the school employees' benefits board program.
(5) The authority shall transmit a recommendation for the amount of the employer contributions to the governor and the director of financial management for inclusion in the proposed budgets submitted to the legislature.