(1) The provisions of §§ 21-4-501 and 21-4-504 apply to: Employees of the Arkansas State Game and Fish Commission;
(2) Employees of the Arkansas Department of Transportation;
(3) Classified employees of state-supported institutions of higher education; and
(4) Employees of all agencies of this state whether in the executive, legislative, or judicial branch of government.
(5) The provisions of this section or any amendments to this section shall not change any employee benefits or agreements established under § 6-57-103, § 6-58-105, or § 6-59-105.
(6) Compensation for accumulated unused sick leave under the provisions of this subchapter shall not be used by the Arkansas Teacher Retirement System in the calculation of final average salary pursuant to § 24-7-202.