815 ILCS 505/2UUU: Non-disparagement clauses in consumer contracts.

(a) A contract or a proposed contract for the sale or lease of consumer merchandise or services may not include a provision waiving the consumer's right to make any statement regarding the seller or lessor or the employees or agents of the seller or lessor or concerning the merchandise or services.

(b) It is an unlawful practice to threaten or to seek to enforce a provision made unlawful under this Section or to otherwise penalize a consumer for making any statement protected under this Section.

(c) Any waiver of the provisions of this Section is contrary to public policy and is void and unenforceable.

(d) This Section may not be construed to prohibit or limit a person or business that hosts online consumer reviews or comments from removing a statement that is otherwise lawful to remove.