---
type: threshold
id: adea
asset: regulatory-threshold-triggers
title: "ADEA — US federal employment law thresholds by employee count"
sources:
  - https://stratus.hr/resources/federal-law-breakdown-how-many-employees
source_quote: "Age Discrimination in Employment Act (ADEA) Per the <https://www.eeoc.gov/eeoc/publications/age.cfm> 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: "ADEA"
full_name: "Age Discrimination in Employment Act"
employee_threshold: "20"
requirement: "you cannot discriminate against (or harass) employees or applicants age 40 or older simply due to their age"
counting_note: "part-time and temporary employees are included in the head-count calculation"
---
**Law:** ADEA

**Full name:** Age Discrimination in Employment Act

**Employee threshold:** 20

**Requirement:** you cannot discriminate against (or harass) employees or applicants age 40 or older simply due to their age

**Counting note:** part-time and temporary employees are included in the head-count calculation

> Age Discrimination in Employment Act (ADEA) Per the <https://www.eeoc.gov/eeoc/publications/age.cfm> 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: <https://stratus.hr/resources/federal-law-breakdown-how-many-employees>