Section 40 ILCS 5/14-115 - [Text of Section WITHOUT the changes made by P.A. 98-599, which has been held unconstitutional] Supplemental Annuity(a) Each annuitant, who retired at age 55 or over and after the completion of at least 15 years of creditable service, whose status as an employee terminated before January 1, 1970, is entitled to a monthly supplemental annuity effective January 1, 1970, or on January 1 nearest the annuitant's 65th birthday, whichever is later. Such supplemental annuity shall be 1-1/2% of the monthly retirement annuity, multiplied by the number of full years which elapsed from the date of the member's latest retirement to the effective date of the supplemental annuity. This monthly supplemental annuity shall be increased on each January 1 thereafter during the lifetime of the annuitant by 1-1/2% of the monthly retirement annuity disregarding any supplemental annuity previously granted. Beginning January 1, 1972, the rate of increase in the supplemental annuity shall be 2%. Beginning January 1, 1979, the rate of increase in the supplemental annuity shall be 3%. The supplemental annuity under this subsection is payable only if the annuitant pays to the System, in a single sum, an amount equal to 1% of his monthly final average compensation multiplied by the number of full years of creditable service.
(b) Any member who retired with less than 15 years of creditable service whose status as an employee terminated before January 1, 1970, shall be entitled to an increase of 3% of the original monthly retirement allowance, effective January 1, 1982, or on January 1 nearest the annuitant's 65th birthday, whichever is later. On each January 1 thereafter during the lifetime of the member, he shall be entitled to an additional increase of 3% of the original monthly retirement allowance. No qualifying contribution is required for the supplemental annuity under this subsection.(c) Beginning January 1, 1990, all automatic annual increases payable under this Section shall be calculated as a percentage of the total monthly amount of annuity payable at the time of the increase, including any supplemental annuity or other increase previously granted under this Article. This section is set out more than once due to postponed, multiple, or conflicting amendments.