The first thing to check is: Was the Charge of Discrimination filed "timely"? A Charge of Discrimination must be filed within 300 days after the alleged discriminatory actions, or one year for a fair housing case.
The Illinois Department of Human Rights ("IDHR") is the agency that administers the Illinois Human Rights Act ("IHRA"), the state law that outlaws discrimination, harassment and retaliation by most employers in Illinois. The IDHR's federal counterpart is the Equal Employment Opportunity Commission ("EEOC"), which administers the federal laws preventing the same type of violations.
It is time to put up two new posters in the workplace if you are an Illinois employer.