(40 ILCS 5/20-107) (from Ch. 108 1/2, par. 20-107)
    Sec. 20-107. Governmental unit. "Governmental unit": The State of Illinois or any agency or instrumentality thereof, or any political subdivision or municipal corporation in the State, which maintains a retirement system for the benefit of its employees.
(Source: Laws 1963, p. 161.)