Age Discrimination Laws in Illinois: Your Workplace Rights

Illinois Human Rights Act (IHRA), 775 ILCS 5/1-101 et seq., provides substantially broader age discrimination protections than federal law. The IHRA protects individuals of ALL ages from age-based discrimination—not just those 40 and older as required under federal ADEA. This means younger workers (under 40) can bring state-level age discrimination claims in Illinois, which is a significant departure from federal law. The IHRA applies to all employers with ONE or more employees, dramatically expanding coverage compared to the ADEA's 20-employee threshold. This means sole proprietorships and very small businesses are covered under Illinois law but not federal law.

Illinois law prohibits the same conduct as federal law: discrimination in hiring, firing, compensation, promotion, job assignment, discipline, and all other terms and conditions of employment based on age. The IHRA is enforced by the Illinois Department of Human Rights (IDHR), which investigates complaints and can issue findings of discrimination. Remedies under Illinois law include actual damages (lost wages, benefits, and other economic harm), compensatory damages for emotional distress, mental anguish, and reputational harm, punitive damages in cases of willful or reckless discrimination, attorney's fees, costs, and interest. Notably, Illinois does not impose the same statutory damages caps or liquidated damages structures as the federal ADEA, potentially allowing for greater recovery in egregious cases.

The IHRA contains several important exceptions and defenses. A "bona fide occupational qualification" (BFOQ) exception exists when age is demonstrably reasonably necessary to the normal operation of a particular business or enterprise—this is narrow and rarely succeeds. Examples might include mandatory retirement ages for certain law enforcement or safety-sensitive positions, but age alone cannot justify the BFOQ defense; the employer must prove age is essential to job performance or safety.

Employers may defend age-based decisions on "factors other than age," including legitimate, non-discriminatory reasons such as poor performance, misconduct, restructuring, reduction in force based on legitimate business reasons, or merit-based promotions. However, the employer bears the burden of proving the stated reason is the actual reason, not a pretext for age discrimination. Courts scrutinize these defenses closely.

The IHRA does not prohibit "reverse discrimination" (favoring older workers over younger ones) in the traditional sense, but younger workers can still bring claims under the broader age protection. Seniority systems and bona fide merit systems are protected if applied equally regardless of age. Union contracts that include seniority or age-based benefits may be defended if they are applied uniformly. However, employers cannot use seniority as a pretext to discriminate on the basis of age itself.

STEP 1 — DOCUMENT THE DISCRIMINATION: Immediately begin documenting all age-related comments, decisions, and actions. Keep copies of performance reviews, emails, texts, meeting notes, and any communications where age was mentioned or implied (e.g., "you're overqualified for the salary," "we need fresh energy," "millennials would be better at social media"). Record dates, times, witnesses, and exact language used. Save all personnel files, job descriptions, organizational charts showing age demographics, and evidence that younger or older workers were treated differently. Create a timeline of events leading up to the adverse employment action (termination, demotion, failure to promote, reduced hours, compensation cuts). Preserve all electronic communications; do not delete emails or messages from management.

STEP 2 — INTERNAL COMPLAINT AND NOTICE: Report the discrimination to your employer's human resources department or management in writing via email or letter with a read receipt. Most Illinois employers have internal anti-discrimination policies; follow them precisely, even if you believe they are inadequate. State clearly that you believe you have been discriminated against based on age, describe the specific incident(s), name witnesses, and request a response within a reasonable timeframe (typically 10-15 business days). Keep a copy of your complaint. If your employer has an Employee Assistance Program (EAP) or ombudsman, report there as well. The internal complaint does not waive your right to file with IDHR, but it may help establish your employer's notice of the problem and create additional documentation.

STEP 3 — FILE WITH IDHR (ILLINOIS DEPARTMENT OF HUMAN RIGHTS): You have 300 days from the date of the discriminatory act to file a charge with IDHR. File electronically or by mail with the IDHR's Chicago office or your nearest regional office. Required information: your name, address, phone number, and email; employer's name, address, and phone number; description of the discriminatory act in detail; dates it occurred; names of witnesses; and what remedy you are seeking (reinstatement, back pay, damages). The IDHR will assign your complaint a charge number and notify the employer of the complaint within 10 business days. You may also file a concurrent charge with the EEOC under the ADEA (if you are 40+), which extends your federal rights. IDHR contact: Department of Human Rights, 100 W. Randolph St., Suite 10-100, Chicago, IL 60601; phone (217) 558-0001; website: www.cyberdriveillinois.com/departments/index/human_rights/.

STEP 4 — INVESTIGATION PROCESS: After filing, IDHR will conduct an investigation (no fee to you). The process typically takes 60-180 days, though it can extend longer. You will receive written notice of the investigation and may be asked to provide additional evidence, witness statements, or clarifications. IDHR may conduct interviews with you, the employer, and witnesses. The employer will provide its position and evidence in defense. You have the right to remain in contact with your IDHR investigator and provide supplemental evidence as the investigation proceeds. After investigation, IDHR will issue a "Determination" finding either "Substantial Evidence of Discrimination" or "No Substantial Evidence." If IDHR finds discrimination, you have the right to request a hearing before an administrative law judge (ALJ), where you can present evidence and testimony under oath.

STEP 5 — CONSULT AN ATTORNEY: Contact an employment law attorney specializing in age discrimination as soon as possible—ideally before filing with IDHR, but certainly within 30 days of filing. An attorney can review the strength of your case, advise on damages you may recover, and represent you through investigation and potential hearing. Many employment attorneys work on contingency (no upfront cost; they take a percentage of recovery). Request a free initial consultation. Look for attorneys with experience in IHRA cases, not just ADEA cases, as state law offers broader protections. The attorney can help navigate IDHR procedures, communicate with the agency on your behalf, prepare evidence and witnesses for hearing, and negotiate settlement.