Employment Law Aid

Massachusetts Age Discrimination Laws: Protecting Workers 40+

Updated 2026-12-10
Fact Checked

Quick Answer

Guide to age discrimination protections in Massachusetts under Chapter 151B. Learn about rights for workers 40 and older.

Quick Answer: Chapter 151B prohibits age discrimination against workers 40 and older at employers with 6+ employees—broader than federal ADEA (20+). File with MCAD within 300 days.

Massachusetts protects older workers from discrimination.

Massachusetts Age Protections

Chapter 151B

Protects workers:

  • Age 40 and older
  • At 6+ employee employers
  • All employment decisions

Federal ADEA

Also provides:

  • Same age threshold
  • 20+ employees
  • Works with state law

What's Prohibited

Hiring

Cannot:

  • Refuse hire based on age
  • Ask age in interviews
  • Set age limits

Workplace Treatment

Cannot:

  • Fire based on age
  • Deny promotions
  • Target in layoffs

Filing Complaints

MCAD (State)

Massachusetts Commission Against Discrimination:

  • Phone: 617-994-6000
  • Deadline: 300 days

EEOC (Federal)

Also available:

  • Phone: 617-565-3200
  • Workshares with MCAD

Common Scenarios

Scenario 1: Layoff Targeting

Situation: Most laid off workers over 50.

Analysis: Pattern may show discrimination.

Scenario 2: Small Employer

Situation: Work for 10-person company.

Analysis: Chapter 151B covers 6+ employees. Protected.

Frequently Asked Questions

What age is protected?

Workers 40 and older.

Does Massachusetts cover small employers?

Yes. 6+ employees under Chapter 151B.

How long to file?

300 days with MCAD.

Related Topics

Take Action

If facing age discrimination:

  1. Document incidents
  2. Note ages of comparators
  3. Note 300-day deadline
  4. Consult attorney

Legal Disclaimer

This article provides general information about age discrimination in Massachusetts and is not legal advice. For specific advice, consult a licensed Massachusetts employment attorney.

For official information:

Frequently Asked Questions

What is chapter 151B?
Protects workers: Age 40 and older At 6+ employee employers All employment decisions
What is federal ADEA?
Also provides: Same age threshold 20+ employees Works with state law
What is workplace Treatment?
Cannot: Fire based on age Deny promotions Target in layoffs
What is mCAD (State)?
Massachusetts Commission Against Discrimination: Phone: 617-994-6000 Deadline: 300 days
What is eEOC (Federal)?
Also available: Phone: 617-565-3200 Workshares with MCAD

Could Your Employer Be Violating Other Laws?

Workplace violations rarely happen in isolation. If your employer is violating one law, they may be violating others too.

Legal Disclaimer

The information on this website is for general informational purposes only and does not constitute legal advice. Employment laws vary by state and change frequently. For advice specific to your situation, consult a licensed employment attorney in your state. Employment Law Aid is not a law firm and does not provide legal representation. No attorney-client relationship is created by using this website.