You can file a complaint and pursue a discrimination claim at the Commission on Human Relations if you believe you have been personally harmed. Workplace discrimination is against the law when it happens because you are a member of a protected class.A charge of discrimination must be filed within 300 days after the alleged discriminatory action, or one year for a Fair Housing case. It is against the law for your employer to retaliate against you if you decide to file an employment discrimination claim or take any kind of legal action. Yes, an individual may file a complaint with the Commission alleging unequal pay discrimination. Call Tim Coffey, at The Coffey Law Firm if you have been a victim of disability discrimination and harassment in the workplace in Chicago, Illinois. Mental illness covers a lot of ground. Certain diagnosis could warrant discrimination based on job type and duty. Employment Law - Chicago Employment Discrimination Lawyer. Mental, psychological, or developmental disability, including autism spectrum disorders.