40 ILCS 5/20-121
2021 Illinois Compiled Statutes|Chapter 40 - PENSIONS|40 ILCS 5/ - Illinois Pension Code.|Article 20 - Retirement Systems Reciprocal Act

 (from Ch. 108 1/2, par. 20-121)(Text of Section WITH the changes made by P.A. 98-599, which has been held unconstitutional)Sec. 20-121. Calculation of proportional retirement annuities.(a) Upon  retirement of the employee, a proportional retirement annuity shall be computed  by each participating system in which pension credit has been established on  the basis of pension credits under each system.  The computation shall be in  accordance with the formula or method prescribed by each participating system  which is in effect at the date of the employee's latest withdrawal from service  covered by any of the systems in which he has pension credits which he elects  to have considered under this Article.  However, the amount of any retirement  annuity payable under the self-managed plan established under Section 15-158.2  of this Code or under the defined contribution plan established under Article 2, 14, 15, or 16 of this Code depends solely on the value of the participant's vested account  balances and is not subject to any proportional adjustment under this  Section.(a-5) For persons who participate in  a defined contribution plan established under Article 2, 14, 15, or 16 of this Code to whom the provisions of this Article apply, the pension credits established under the defined contribution plan may be considered in  determining eligibility for or the amount of the defined benefit retirement annuity that is  payable by any other participating system.(b) Combined pension credit under all retirement systems subject to this  Article shall be considered in determining whether the minimum qualification  has been met and the formula or method of computation which shall be applied, except as may be otherwise provided with respect to vesting in State or employer contributions in a defined contribution plan.  If a system has a step-rate formula for calculation of the retirement annuity,  pension credits covering previous service which have been established under  another system shall be considered in determining which range or ranges of  the step-rate formula are to be applicable to the employee.(c) Interest on pension credit shall continue to accumulate in accordance with  the provisions of the law governing the retirement system in which the same  has been established during the time an employee is in the service of another  employer, on the assumption such employee, for interest purposes for pension  credit, is continuing in the service covered by such retirement system.  (Source: P.A. 98-599, eff. 6-1-14.)(Text of Section WITHOUT the changes made by P.A. 98-599, which has been held unconstitutional)Sec. 20-121.     Calculation of proportional retirement annuities.     Upon  retirement of the employee, a proportional retirement annuity shall be computed  by each participating system in which pension credit has been established on  the basis of pension credits under each system.  The computation shall be in  accordance with the formula or method prescribed by each participating system  which is in effect at the date of the employee's latest withdrawal from service  covered by any of the systems in which he has pension credits which he elects  to have considered under this Article.  However, the amount of any retirement  annuity payable under the self-managed plan established under Section 15-158.2  of this Code depends solely on the value of the participant's vested account  balances and is not subject to any proportional adjustment under this  Section.Combined pension credit under all retirement systems subject to this  Article shall be considered in determining whether the minimum qualification  has been met and the formula or method of computation which shall be applied.  If a system has a step-rate formula for calculation of the retirement annuity,  pension credits covering previous service which have been established under  another system shall be considered in determining which range or ranges of  the step-rate formula are to be applicable to the employee.Interest on pension credit shall continue to accumulate in accordance with  the provisions of the law governing the retirement system in which the same  has been established during the time an employee is in the service of another  employer, on the assumption such employee, for interest purposes for pension  credit, is continuing in the service covered by such retirement system.    (Source: P.A. 91-887, eff. 7-6-00.)