Ill. Admin. Code tit. 80, § 2210.380
b) The State shall continue to contribute toward the cost of an Employee’s elected coverage, at the same rate as if the Employee were in active service, if the Employee is not in active service due to one of the following reasons:
B) An Employee on a nonoccupational disability leave but is not receiving ordinary or accidental disability benefits or retirement benefits through the appropriate retirement system will remain eligible for State contributions toward the cost of coverage until expiration of authorized leave or return to active service, subject to a maximum period of 24 months.
c) The State will not contribute toward the cost of an Employee’s elected coverage, when the Employee is not in active service due to one of the following reasons. An Employee not in active service due to one of these reasons may continue participation in the Program only by making personal payment equal to the total cost of the Employee’s elected coverage.