As used in this Act:
"Armed forces of the United States" means the United States Army, Marine Corps, Navy, Air Force, and Coast Guard, or the reserve component of any of those, and includes the Illinois National Guard.
"Private employer" means any non-public sole proprietor, corporation, partnership, limited liability company, or other private, non-public entity employing one or more employees within Illinois.
"Veteran" means an individual who meets one or more of the following:
"Veterans' preference employment policy" means a private employer's voluntary preference for hiring, promoting, or retaining a veteran over another equally qualified applicant or employee.
330 ILCS 56/10