(40 ILCS 5/20-101)
(from Ch. 108 1/2, par. 20-101)
Continuity and preservation of pension credits.
There is established a plan for the continuity and preservation of
pension credit, in accordance with the provisions hereof, in the case of
employees transferring employment from one governmental unit to another.
The purpose of this plan is to assure full and continuous pension credit
for all service in public employment which is covered by a retirement
The acceptance of the provisions of this Article, shall be optional with
the employee, or in the event of his death, with his survivor; however, the
provisions of Section 20-120 shall be applicable to every person who applies
for benefits from 2 or more retirement systems covered by this Article.
(Source: P.A. 77-531.)