For any death in service the early retirement discount required under Section 13-302(b) shall not be applied in computing the retirement annuity upon which is based the surviving spouse's annuity.
For any death after withdrawal and prior to application for annuity benefits, the early retirement discount required under Section 13-302(b) shall be applied in computing the retirement annuity upon which the surviving spouse's annuity is based. The maximum age discount applied to the employee's retirement annuity shall not exceed 60%.
Further, the annuity for a surviving spouse of a withdrawn employee who was eligible for an annuity upon attainment of age 62 pursuant to Section 13-301(b) but who died prior to age 60 shall be based upon an employee annuity that has been reduced by 1/2% for each full month between the date the surviving spouse's annuity begins and the employee's attainment of age 60.
Beginning January 1, 1993, surviving spouse annuitants whose deceased spouse died, retired or withdrew from service before August 23, 1989 with at least 10 years of service under this Article shall be eligible for the annual increases provided under this subsection.
Beginning January 1, 1993, the minimum monthly surviving spouse's annuity shall be $250 for any annuitant (other than a term or reciprocal annuitant or an annuitant survivor under subsection (d) of Section 13-301) whose deceased spouse had less than 10 years of service under this Article, and for any annuitant (other than a term annuitant) whose deceased spouse had at least 10 years of service under this Article and began receiving a retirement annuity under this Article before attainment of age 60. Any such surviving spouse annuitant who is receiving a monthly annuity of less than $250 shall have the annuity increased to $250 on that date.
In the case of a reciprocal annuity, the minimum annuity calculated under this subdivision (e)(2) shall apply only if the deceased spouse of the annuitant had at least 10 years of service under this Article, and the amount of the minimum annuity shall be reduced by the sum of all the reciprocal annuities payable to the annuitant by other participating systems under Article 20 of this Code.
The minimum annuity calculated under this subdivision (e)(2) is in addition to the amount of any reversionary annuity that may be payable.
40 ILCS 5/13-306