Ga. Code § 45-18-7
The contract or contracts shall provide for health insurance for retiring state employees and their spouses and dependent children, as defined by the regulations of the board, on such terms as the board may deem appropriate; and the board may authorize the inclusion in the plan of the employees and retiring employees of state authorities covered by the Employees' Retirement System of Georgia and their spouses and dependent children, as defined by the regulations of the board. Any state authority participating in the plan shall be required to pay the same rate of contribution paid by the state. The board shall adopt regulations prescribing the conditions under which an employee or retiring employee may elect to participate in or withdraw from the plan.
OCGA § 45-18-7