(5 ILCS 430/15-20)
    Sec. 15-20. Burden of proof. A violation of this Article may be established only upon a finding that (i) the State employee engaged in conduct described in Section 15-10 and (ii) that conduct was a contributing factor in the retaliatory action alleged by the State employee. It is not a violation, however, if it is demonstrated by clear and convincing evidence that the officer, member, other State employee, or State agency would have taken the same unfavorable personnel action in the absence of that conduct.
(Source: P.A. 93-615, eff. 11-19-03; 93-617, eff. 12-9-03.)