--- type: threshold id: age-discrimination-in-employment-act-adea asset: regulatory-threshold-triggers title: "Age Discrimination in Employment Act (ADEA) — US federal employment law thresholds by employee count" sources: - https://stratus.hr/resources/federal-law-breakdown-how-many-employees source_quote: "Here are the laws that apply to employers with 20+ employees in any industry affecting commerce. Age Discrimination in Employment Act (ADEA) Per the Age Discrimination in Employment Act (ADEA), you cannot discriminate against (or harass) employees or applicants age 40 or older simply due to their age." generated: true verified: false harvested: 2026-08-04 stale_after: 2027-08-04 law: "Age Discrimination in Employment Act (ADEA)" full_name: "Age Discrimination in Employment Act" employee_threshold: "20" requirement: "you cannot discriminate" counting_note: "Unless otherwise specified, part-time and temporary employees are included in the head-count calculation" --- **Law:** Age Discrimination in Employment Act (ADEA) **Full name:** Age Discrimination in Employment Act **Employee threshold:** 20 **Requirement:** you cannot discriminate **Counting note:** Unless otherwise specified, part-time and temporary employees are included in the head-count calculation > Here are the laws that apply to employers with 20+ employees in any industry affecting commerce. Age Discrimination in Employment Act (ADEA) Per the Age Discrimination in Employment Act (ADEA), you cannot discriminate against (or harass) employees or applicants age 40 or older simply due to their age. Source: