Section 40 ILCS 5/2-117.2 - Transfer of creditable service to Article 8, 9 or 13 fund(a) Any city officer as defined in Section 8-243.2 of this Code, any county officer elected by vote of the people who is a participant in a pension fund established under Article 9 of this Code, and any elected sanitary district commissioner who is a participant in a pension fund established under Article 13 of this Code, may apply for transfer of his or her creditable service accumulated under this System to such Article 8, 9 or 13 fund. Such creditable service shall be transferred forthwith. Payment by this System to the Article 8, 9 or 13 fund shall be made at the same time and shall consist of: (1) the amounts credited to the participant under this System through participant contributions, including interest, if any, on the date of the transfer, but excluding any additional optional credits, which credits shall be refunded to the participant; 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.
(b) Any such elected city officer, county officer or sanitary district commissioner who has credits and creditable service under the System may establish additional credits and creditable service for periods during which he could have elected to participate but did not so elect. Credits and creditable service may be established by payment to the System of an amount equal to the contributions he would have made if he had elected to participate, plus interest to the date of payment.(c) Any such elected city officer, county officer or sanitary district commissioner may reinstate credits and creditable service terminated upon receipt of a refund, by payment to the System of the amount of the refund plus interest thereon to the date of payment.