Mass. Gen. Laws » Part I Title XXI Chapter 149
Massachusetts General Laws

Mass. Gen. Laws ch. 149, § 20 (2026)

Coercion of agreement not to join a labor organization

✓ current as of July 2026
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Section 20. No person shall, himself or by his agent, coerce or compel a person into a written or oral agreement not to join or become a member of a labor organization as a condition of his securing employment or continuing in the employment of such person.

Notes of Decisions
Cited in 2 cases, 1999–2005 · leading case: Santagate v. Tower, 833 N.E.2d 171 (Mass. App. Ct. 2005).
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Santagate v. Tower, 833 N.E.2d 171 (Mass. App. Ct. 2005). · cites it 2× “215, § 6, establishing equity power in a probate judge, except in matters of injunctive relief stemming from a labor dispute as defined by G. L. c. 149, § 20(c), was meant to confer additional jurisdiction to hear equity matters not related to the Probate and Family Court’s…”
Transp. Workers Union v. Massachusetts Bay Transp. Auth., 10 Mass. L. Rptr. 637 (Mass. Super. Ct. 1999). “The parties all agree that this action involves a labor dispute as defined under G.L.c. 149, §20(c). 4 The parties also agree that as between plaintiffs and Bay State, the Anti-Injunction Act applies and plaintiffs must comply with its requirements before an injunction will…”
— Mass. Gen. Laws ch. 149, § 20(c) — 2 cases
Santagate v. Tower, 833 N.E.2d 171 (Mass. App. Ct. 2005). “215, § 6, establishing equity power in a probate judge, except in matters of injunctive relief stemming from a labor dispute as defined by G. L. c. 149, § 20(c), was meant to confer additional jurisdiction to hear equity matters not related to the Probate and Family Court’s…”
Transp. Workers Union v. Massachusetts Bay Transp. Auth., 10 Mass. L. Rptr. 637 (Mass. Super. Ct. 1999). “The parties all agree that this action involves a labor dispute as defined under G.L.c. 149, §20(c). 4 The parties also agree that as between plaintiffs and Bay State, the Anti-Injunction Act applies and plaintiffs must comply with its requirements before an injunction will…”
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