Section 40 ILCS 5/9-128 - Annuities - Present employees and future entrants - Withdrawal before age 50An employee who, prior to January 1, 1988, withdraws after 10 years of service before age 55 and attains age 55 while out of service shall be entitled to annuity after attainment of age 55. An employee with at least 10 years of creditable service who withdraws from service on or after January 1, 1988 at less than age 50 shall be entitled to annuity upon attaining age 50. Such annuities shall be calculated as follows:
1.Present employee and future entrant with 20 or more years of service - Age and service annuity provided from the total sum accumulated to his credit from employee contributions and county contributions for such annuity, and, in addition in the case of a present employee, prior service annuity from the sum accumulated to his credit for such annuity.2.Present employee and future entrant with 10 or more but less than 20 years of service - Age and service annuity provided from total sum accumulated to his credit for such annuities from employee contributions, plus 1/10 of the county contributions accumulated to his credit for each year of service after the first 10 years; and, in addition, in the case of a present employee, credits for prior service annuity on account of employee contributions to any county pension fund in operation in the county on the effective date, and 1/10 of the prior service annuity accumulated to his credit under "The 1925 Act" and this Article, for each year of service after the first 10 years. Any such annuity shall be computed as though the employee were age 50 when the annuity was granted (age 55 for employees withdrawing before January 1, 1988), regardless of his actual age at the time of application for annuity. An employee shall not be entitled to annuity for any period between the date he attained age 50 (age 55 for employees withdrawing before January 1, 1988) and the date of application for annuity.