No employer shall discharge, demote or suspend, or threaten to discharge, demote or suspend, or in any manner discriminate against any employee who makes any good faith oral or written report of suspected child abuse or neglect, or who is or will be a witness or testify in any investigation or proceeding concerning a report of suspected child abuse or neglect. For purposes of this Section "child abuse or neglect" includes abuse or neglect of an adult resident as defined in this Act.
325 ILCS 5/9.1