Ill. Admin. Code tit. 20, § 1790.600
Failure of a party to appear at the hearing or failure to proceed as ordered by the ALJ shall constitute a default. The ALJ shall enter the appropriate default order and make his or her decision as provided in Section 1790.630; if the default occurred at a hearing, the ALJ shall make his or her decision after review of any evidence presented as provided in Section 1790.250.