Cause for discharge consists of some substantial shortcoming which renders the continuance of an employee in a State position in some way detrimental to the discipline and/or efficiency of the service and which the law or sound public opinion recognizes as good cause for the employee no longer being held in that position.
Ill. Admin. Code tit. 80, § 302.700
Added at 10 Ill. Reg. 13940, effective September 1, 1986