A. The following persons shall not be members of the retirement system:
1. Elective officers and appointive members of boards and commissions.
2. Employees, not then already members, certified from civil service lists for temporary employment.
3. Inmates of city institutions who are allowed compensation for such service as they are able to perform.
4. Persons in city institutions principally for the purpose of training but who receive compensation.
5. Persons employed under contract for a definite period and for the performance of specific duties.
6. Employees, not already members, serving in a part-time, seasonal, or limited term basis or as substitutes.
7. Employees who are members of the Public Employees Retirement System of the state of California (PERS) by reason of a contract between the city and the Board of Administration of PERS executed pursuant to former (1989) Charter Section 372, and Charter Section 372.
B. Any employee so excluded from membership by subsections (A)(2) or (A)(6) this section may make contributions to the system when and if he or she subsequently becomes a member, in an amount determined by the application of his or her current contribution rate, based on his or her then attained age, to his or her compensation, before deduction for any reason other than absence from duty, for the city service rendered in such temporary, part-time, seasonal, limited term, or substitute employment, and the city shall contribute as if such services were rendered as a member. (Prior code § 34.01.103)