The provisions of this chapter shall apply to all offices, positions and employments in the service of the city, except:
(A) Elective officers;
(B) Members of appointive boards, commissions and committees;
(C) Persons engaged under contract to supply expert, professional or technical services for a definite period of time;
(D) Volunteer personnel, such as volunteer firefighter;
(E) City Manager;
(F) City Attorney.
('81 Code, § 2.44.030)