820 ILCS 12/10
In this Act:
"Employer" includes any person acting as an agent of an employer, directly or indirectly, but does not include the United States or any wholly owned government corporation, or any Federal Reserve Bank, or any State or political subdivision thereof, or any person subject to the Railway Labor Act, 45 U.S.C. 151 et seq., as amended from time to time, or any labor organization (other than when acting as an employer), or anyone acting in the capacity of officer or agent of such labor organization.
"Interested party" means a person with an interest in compliance with this Act.
"Labor organization" means any organization of any kind, or any agency or employee representation committee or plan, in which employees participate and that exists for the purpose, in whole or in part, of dealing with employers concerning grievances, labor disputes, wages, rates of pay, hours of employment, or conditions of work.
"Local government" and "political subdivision" include, but are not limited to, any county, city, town, township, village, municipality or subdivision thereof, airport authority, cemetery district, State college or university, community college, conservation district, drainage district, electric agency, exposition and auditorium authority, fire protection district, flood prevention district, forest preserve district, home equity program, hospital district, housing authority, joint action water agency, mass transit district, mosquito abatement district, multi-township assessment district, museum district, natural gas agency, park district, planning agency, port district, public building commission, public health district, public library district, public water district, emergency services district, river conservancy district, road and bridge district, road district, sanitary district, school district, soil and water conservation district, solid waste agency, special recreation association, street lighting district, surface water district, transportation authority, water authority, water commission, water reclamation district, water service district, municipal corporation, and any other district, agency, or political subdivision authorized to legislate or enact laws affecting its respective jurisdiction, notwithstanding such local government or political subdivision's authority to exercise any power and perform any function pertaining to its government and affairs granted to it by the Illinois Constitution, a law, or otherwise.
820 ILCS 12/10