Ill. Admin. Code tit. 50, § 4402.20
The purpose of this Part is to define the word "salary" as used in Section 3-125 and 4-124 of the Illinois Pension Code [40 ILCS 5/3-125 and 4-124] as it applies to pension funds formed pursuant to Articles 3 and 4 of the Illinois Pension Code.
(Source: Amended at 22 Ill. Reg. 15296, effective August 7, 1998)