Ill. Admin. Code tit. 4 § 350.120
"Complainant" is an individual with a disability who files a grievance form provided by the Office in accordance with this Part.
"Designated Coordinator" is the person appointed by the Treasurer to coordinate the Office's efforts to comply with and carry out its responsibilities under Title II of the ADA, including investigation of grievances filed by complainants. The Designated Coordinators for the Office can be contacted at Suite 15-600, State of Illinois Center, Chicago IL 60601 or by telephone at (312)814-3571, and at 300 West Jefferson, Springfield IL 62702 or by telephone at (217)782-6540.
"Disability" means, with respect to an individual, a physical or mental impairment that substantially limits one or more of the major life activities of such individual; a record of such impairment; or being regarded as having such an impairment.
"Grievance" is any complaint under the ADA by an individual with a disability who meets the essential eligibility requirements for participation in or receipt of the benefits of a program, activity or services offered by the Office, and who believes he or she has been excluded from participation in or denied the benefits of any program, service or activity of the office, or has been subject to discrimination by the Office, on the basis of his or her disability.
"Qualified individual with a disability" means an individual with a disability who, with or without reasonable modifications to rules, policies or practices, the removal of architectural, communication or transportation barriers, or the provision of auxiliary aids and services, meets the essential eligibility requirements for the receipt of services or the participation in programs or activities provided by the Office.
Ill. Admin. Code tit. 4, § 350.120