Illinois Statutes Chapter 40. Pensions § 5/12-136. Spouses not entitled to a surviving spouse's annuity

(a) the spouse of an employee who withdraws or retires and who dies while out of service, if such spouse was not the spouse of the employee while in service;

(b) the spouse of an employee who received a refund;

(c) the spouse of an employee who dies after withdrawal if the employee withdrew before attainment of age 60 and has less than 10 years of service;

(d) the spouse of an employee or annuitant who remarries after the death of the employee or annuitant, if the spouse is under age 55 at the time of the remarriage;

(e) the former spouse of any employee, inactive member or annuitant, regardless of the date on which the marriage is dissolved.