(a)   The civil service board shall adopt, amend and enforce a code of rules and regulations providing for appointment and employment in all positions in the position classification plan based on merit, efficiency, character and industry, and shall make investigations concerning the enforcement and effect of the rules so adopted.
   (b)   All rules so made shall be subject to the approval of the mayor, and they may with like approval be from time to time altered or rescinded by the civil service board.
(1957 Rev. Ords., § 3.105; 1972 Code, § 30-68; 1992 Code, § 30-67)  (Ord. 87-91, passed 11-25-1991; Ord. 37-95, passed 3-6-1995)