Illinois Statutes Chapter 820. Employment § 96/1-25. Conditions of employment or continued employment

(a) Any agreement, clause, covenant, or waiver that is a unilateral condition of employment or continued employment and has the purpose or effect of preventing an employee or prospective employee from making truthful statements or disclosures about alleged unlawful employment practices is against public policy, void to the extent it prevents such statements or disclosures, and severable from an otherwise valid and enforceable contract under this Act.

(b) Any agreement, clause, covenant, or waiver that is a unilateral condition of employment or continued employment and requires the employee or prospective employee to waive, arbitrate, or otherwise diminish any existing or future claim, right, or benefit related to an unlawful employment practice to which the employee or prospective employee would otherwise be entitled under any provision of State or federal law, is against public policy, void to the extent it denies an employee or prospective employee a substantive or procedural right or remedy related to alleged unlawful employment practices, and severable from an otherwise valid and enforceable contract under this Act.

(c) Any agreement, clause, covenant, or waiver that is a mutual condition of employment or continued employment may include provisions that would otherwise be against public policy as a unilateral condition of employment or continued employment, but only if the agreement, clause, covenant, or waiver is in writing, demonstrates actual, knowing, and bargained-for consideration from both parties, and acknowledges the right of the employee or prospective employee to:

(d) Failure to comply with the provisions of subsection (c) shall establish a rebuttable presumption that the agreement, clause, covenant, or waiver is a unilateral condition of employment or continued employment that is governed by subsection (a) or (b).

(e) Nothing in this Section shall be construed to prevent an employee or prospective employee and an employer from negotiating and bargaining over the terms, privileges, and conditions of employment.