Illinois Statutes Chapter 820. Employment § 40/1. Definitions

(a) “Employee” means a person currently employed or subject to recall after layoff or leave of absence with a right to return at a position with an employer or a former employee who has terminated service within the preceding year.

(b) “Employer” means an individual, corporation, partnership, labor organization, unincorporated association, the State, an agency or a political subdivision of the State, or any other legal, business, or commercial entity which has 5 employees or more than 5 employees exclusive of the employer's parent, spouse or child or other members of his immediate family and includes an agent of the employer.