70 ILCS 1210/8a
Any re-employment register of persons who have been laid off but who are qualified for employment under the provisions of this Act, in any park district to which this Act applies, which re-employment register may be or shall have been in existence at the time of the merger or consolidation of such park district with one or more other park districts or at the time of the creation of another park district which has superseded or shall supersede such park district and the duly qualified Commissioners of which new park district have assumed or shall assume and take over the powers and duties vested in and exercised by the Commissioners of such former park district, shall continue to be used by the Superintendent of Employment for the purpose of filling vacancies, but a person being upon any such re-employment register may be appointed only to a position, the duties of which are confined to the area included in such former park district. Provided, however, that nothing herein contained shall be construed to prevent the assignment of any person in the classified service after appointment to a position therein, to duty in any part of such new park district in accordance with his classification and grade.
70 ILCS 1210/8a