(40 ILCS 5/9-122) (from Ch. 108 1/2, par. 9-122)
    Sec. 9-122. Time of fixing annuities-Waiver.
    No annuity or disability benefit shall be fixed, granted, or paid under this Article before the effective date.
    Any employee annuitant or widow annuitant may execute a waiver of his or her right to receive any part of his or her total annuity. A waiver shall take effect upon its being filed with the board. A waiver may not be revoked after it is executed and filed, except within the first 30 days after being filed.
(Source: Laws 1963, p. 161.)