(40 ILCS 5/21-102.12) (from Ch. 108 1/2, par. 21-102.12)
Sec. 21-102.12.
"Retirement system coverage group" means a grouping of employees who are in positions covered by a public retirement system which has been placed under social security coverage by either Section 218(d)(3) or Section 218(d)(6) of the Social Security Act.
(Source: P.A. 84-1028.)