(40 ILCS 5/12-130) (from Ch. 108 1/2, par. 12-130)
    Sec. 12-130. Retirement prior to age 60. An employee withdrawing prior to January 1, 1990 with at least 10 years of service and before attainment of age 55 shall be entitled at his option to a retirement annuity beginning at age 55.
    An employee withdrawing prior to January 1, 1990 with at least 10 years of service upon or after attainment of age 55, and before age 60, shall be entitled to a retirement annuity beginning at any time thereafter.
    An employee who withdraws on or after January 1, 1990 with at least 10 years of service and prior to age 60 shall be entitled, at his option, to a retirement annuity beginning at any time after withdrawal or attainment of age 50, whichever occurs later.
    Any employee upon withdrawal after at least 15 years of service, upon or after attainment of age 50, and before attainment of age 55, who received ordinary disability benefit for the maximum period of time provided herein, and who continues to be disabled, shall be entitled to a retirement annuity.
    The amount of retirement annuity for any employee who entered service prior to July 1, 1971 shall be provided from the total of the accumulations as stated in this Section, at the employee's attained age on the date of retirement:
        (a) the accumulation from employee contributions for
    
service annuity on the date of withdrawal, improved by regular interest from the date the employee withdraws to the date he enters upon annuity;
        (b) 1/10 of the accumulation, on the date of
    
withdrawal, from employer contributions for service annuity, for each complete year of service above 10 years up to 100% of such accumulation, improved by regular interest from the date the employee withdraws to the date he enters upon annuity.
(Source: P.A. 102-263, eff. 8-6-21.)