Section 40 ILCS 5/9-120.1 - CTA - continued participation; military service credit(a) A person who (i) has at least 20 years of creditable service in the Fund, (ii) has not begun receiving a retirement annuity under this Article, and (iii) is employed in a position under which he or she is eligible to actively participate in the retirement system established under Section 22-101 of this Code may elect, after he or she ceases to be a participant but in no event after June 1, 1998, to continue his or her participation in this Fund while employed by the Chicago Transit Authority, for up to 10 additional years, by making written application to the Board.(b) A person who elects to continue participation under this Section shall make contributions directly to the Fund, not less frequently than monthly, based on the person's actual Chicago Transit Authority compensation and the rates applicable to employees under this Fund. Creditable service shall be granted to any person for the period, not exceeding 10 years, during which the person continues participation in this Fund under this Section and continues to make contributions as required. For periods of service established under this Section, the person's actual Chicago Transit Authority compensation shall be considered his or her salary for purposes of calculating benefits under this Article.(c) A person who elects to continue participation under this Section may cancel that election at any time.(d) A person who elects to continue participation under this Section may establish service credit in this Fund for periods of employment by the Chicago Transit Authority prior to that election, by applying in writing and paying to the Fund an amount representing employee contributions for the service being established, based on the person's actual Chicago Transit Authority compensation and the rates then applicable to employees under this Fund, without interest.(e) A person who qualifies under this Section may elect to purchase credit for up to 4 years of military service, whether or not that service followed service as a county employee. The military service need not have been served in wartime, but the employee must not have been dishonorably discharged. To establish this creditable service the applicant must pay to the Fund, on or before July 1, 1998, an amount determined by the Fund to represent the employee contributions for the creditable service, based on the employee's rate of compensation on his or her last day of service as a contributor before the military service or his or her salary on the first day of service following the military service, whichever is greater, plus interest at the effective rate from the date of discharge to the date of payment. For the purposes of this subsection, "military service" includes service in the United States armed forces reserves.(f) Notwithstanding any other provision of this Section, a person may not establish creditable service under this Section for any period for which the person receives credit under any other public employee retirement system, including the retirement system established under Section 22-101 of this Code, unless the credit under that retirement system has been irrevocably relinquished. P.A. 90-32, eff. 6/27/1997.