40 ILCS 5/9-148

Except as provided in Section 9-148.1, the following widows or wives of employees have no right to annuity from the fund: (a) The widow or wife, married subsequent to the effective date, of an employee who dies in service if she was not married to him before he attained age 65; (b) The widow or wife, married subsequent to the effective date, of an employee who withdraws from service whether or not he enters upon annuity, and who dies while out of service, if she was not his wife while he was in service and before he attained age 65; (c) The widow or wife of an employee with 10 or more years of service whose death occurs out of and after he has withdrawn from service, and who has received a refund of contributions for annuity purposes; (d) The widow or wife of an employee with less than 10 years of service who dies out of service after he has withdrawn from service before he attained age 60.