No county or county officer may adopt any rule or take any action which requires a county employee, as a condition of employment, to retire at or before a specified age or after a specified number of years of service. All of the provisions of section 2704 relating to the prohibition of mandatory retirement of municipal employees also apply to and prohibit the mandatory retirement of county employees.   [PL 1987, c. 737, Pt. A, §2 (NEW); PL 1987, c. 737, Pt. C, §106 (NEW); PL 1989, c. 6 (AMD); PL 1989, c. 9, §2 (AMD); PL 1989, c. 104, Pt. C, §§8, 10 (AMD).]