Chicago Heights — Ch. 23 Human Relations § 23-67

It shall be unlawful to deny any person access to or membership or participation in any multiple-listing service, real estate brokers' organization or other service, organization, or facility relating to the business of selling or renting dwellings or to discriminate against any person in the terms or conditions of such access, membership or participation because of race, color, religion, sex, physical or mental disability, family status, mental status, national origin, or age.
Prohibited actions under this section include, but are not limited to: (a)
Setting different fees for access to or membership in a multiple-listing service based on race, color, religion, sex, physical or mental disability, familial status, marital status, national origin, or age;
(b) Denying or linking benefits accruing to members in a real estate brokers' organization because of race, color, religion, sex, mental or physical disability, familial status, marital status, national origin, or age;
(c) Imposing different standards or criteria for membership in real estate or rental organizations based on race, color, religion, sex, mental or physical disability, familial status, marital status, national origin, or age;
(d) Establishing board or multilisting service boundaries, residence or office, location or other membership requirements which have the effect of excluding persons from membership because of race, color, religion, sex, physical or mental disability, familial status, marital status, national origin, or age;
(e) Refusing to hire or contract with any person because of race, color, religion, sex, physical or mental disability, familial status, marital status, national origin, or age.