The commissioner is authorized to execute a contract or contracts to provide the benefits as approved in the plan or plans in accordance with this article. Such contract or contracts may be executed with one or more corporations licensed to transact business in this state, or the plan or plans, except for life, disability, or individual supplemental accident and sickness insurance, may be totally self-administered. Prior to entering into any contract under this Code section, the commissioner shall invite proposals from and allow a reasonable time for qualified corporations or qualified entities to bid on providing approved plan or plans benefits. The commissioner may invite proposals from any qualified entity as in the opinion of the council would desire to accept any part of the benefits authorized by this article. (Code 1981, § 45-18-56, enacted by Ga. L. 1985, p. 441, § 1; Ga. L. 1986, p. 10, § 45.) 45-18-57. Contributions from state departments, boards, and agencies. The various departments, boards, and agencies of the state government may contribute such portions of the cost of such benefits and the administration thereof as may be established by the general appropriations Act. (Code 1981, § 45-18-57, enacted by Ga. L. 1985, p. 441, § 1.) 545 45-18-58 PUBLIC OFFICERS & EMPLOYEES 45-18-71 45-18-58. Liability for errors or omissions.