(a) The following services of state employees in positions not covered by the retirement system and in positions covered by the retirement system but who are ineligible to be members shall not be covered under Social Security: (1) All services in any class or classes of (A) elective positions, (B) positions the compensation for which is on a fee basis, or (C) part-time positions; (2) agricultural labor and student service, to the fullest extent such noncoverage is permitted under Section 218 of the Social Security Act.

(b) To the extent permitted by Section 218 of the Social Security Act and not prohibited above, services of state employees in positions not covered by the retirement system and in positions covered by the retirement system but who are ineligible to be members shall be covered under Social Security. The services of any such ineligible employee shall continue to be covered under Social Security if he thereafter becomes eligible to be a member.

(c) A member who is covered under Social Security shall not lose his coverage, and a member who is not covered under Social Security shall not be denied coverage, solely because his position is also covered under another retirement system of this state or any subdivision thereof.

(d) The members of the Teachers’ Retirement Association are not authorized to hold a referendum as described in Section 218(d)(3) or a vote as described in Section 318(d)(7) of the Social Security Act.

(e) An elective or other state employee, for whom membership in the retirement system is optional and who is not a member, shall be considered to be a member for the purpose of having him covered under Social Security, to the extent permitted by Section 218(d)(6)(E) and (F) of the Social Security Act.