ⓘ The law protects individuals who are 40 years of age or older. Employment discrimination due to age is prohibited by the Age Discrimination in Employment Act (ADEA), which protects individuals aged 40 and older from unfair treatment in hiring, firing, promotions, and other employment decisions. Discrimination based on age is enforced by the Equal Employment Opportunity Commission (EEOC). Some professions have exceptions, such as public safety roles that may have mandatory retirement ages. Age Discrimination in Employment.