(40 ILCS 5/2-117.1) (from Ch. 108 1/2, par. 2-117.1)
    Sec. 2-117.1. Participants - Election to continue participation.
    (a) Any person who has served as a member for 4 or more years or who has elected to become a member pursuant to Section 2-105, and who is employed in such a position as to be eligible to actively participate in one of the retirement systems established under Articles 5 through 18 of this Code or under the authority of the Illinois Housing Development Act, and who earns in that capacity, at the time of making an election under this subsection, an amount at least equal to the minimum salary provided by law for members of the General Assembly, may elect after he or she ceases to be a member, but in no event after June 1, 1992, to continue his or her participation in this System for up to 4 additional years instead of participating in such other retirement system, by making written application to the board.
    (b) A person who elects to continue participation under this Section shall make contributions directly to the board, not less frequently than monthly, at the rates specified for participants under Section 2-126. The State shall continue to make contributions on behalf of persons participating under this Section on the same basis as for other participants.
    Creditable service shall be granted to any person for the period, not exceeding 4 years, during which the person continues participation under this Section and continues to make contributions as required.
    (c) A person who elects to continue participation under this Section may cancel such election at any time, and may apply to transfer the creditable service accumulated under this Section to any one of the retirement systems established under Articles 5 through 18 or the Illinois Housing Development Act in which he or she is eligible to participate. Upon such application, the board shall pay to such retirement system (1) the amounts credited to the participant under this Section through participant contributions, including interest, if any, on the date of transfer, plus (2) employer contributions in an amount equal to the amount determined under clause (1). Participation in this System as to any credits transferred under this Section shall terminate on the date of transfer.
(Source: P.A. 86-272; 86-1488; 87-794.)