Massachusetts General Laws Part I. Administration of the Government (Ch. 1-182) Ch. 157, § 17

The marketing contract may fix as liquidated damages specific sums to be paid by a member upon breach of the provisions of said contract requiring sale or delivery of products by the member exclusively to or through the corporation or any agency designated by it, and such provision shall be valid and enforceable in the courts of the commonwealth. Any such corporation may be granted a temporary or permanent injunction against a member for breach or threatened breach of such contract with reference to the said provisions for sale or delivery of products.