A charge of Employment discrimination must be filed within 300 days of the alleged discrimination. A charge of discrimination must be filed within 300 days after the alleged discriminatory action, or one year for a Fair Housing case.An employee must be at least 30 for state and federal discrimination laws to apply. You have 365 days from the last incident to file a claim with the CCHR. Your employer must have at least 1 employee. The Age Discrimination in Employment Act (ADEA) forbids age discrimination against people who are age 40 or older. Age discrimination occurs when an employee or job applicant receives less favorable treatment because of their age. This law prohibits employers with 20 or more employees from discriminating against individuals aged 40 and above. The Illinois Human Rights Act (IHRA) prohibits age discrimination against employees and job applicants who are 40 years old or older. If age is utilized to limit an employee or prospective employee a claim may be filed.