(a) On and after July 1, 1990, the following shall be members of the retirement system:

(1) The director of the Administrative Office of the Courts of the Judicial Council of Georgia and any other person employed by the Administrative Office of the Courts or the Judicial Council of Georgia who is in a position which normally requires actual performance of duties during the full 12 months of the calendar year; and

(2) The director of the Council of Juvenile Court Judges and any other person employed by the Council of Juvenile Court Judges who is in a position which normally requires actual performance of duties during the full 12 months of the calendar year.

(b) Membership under this Code section shall be subject to the provisions of Code Section 47-2-334, relating to persons becoming members of the retirement system on or after July 1, 1982.

(c) Employee contributions from members under this Code section for service on and after July 1, 1990, shall be deducted and remitted to the board of trustees by the appropriate employing authority. Employer contributions under this Code section for service on and after July 1, 1990, shall be payable from funds appropriated for the operation of the judicial branch of government; and such employer contributions shall be in addition to the regular compensation otherwise payable to such members.