Sheet Metal Division of Capitol District Sheet Metal, Roofing & Air Conditioning Contractors Ass'n v. Local Union 38 of the Sheet Metal Workers International Ass'n
The plaintiffs, a coalition of sheet metal contractor associations, filed a lawsuit against Local Union 38 and a related employer association, alleging violations of federal and state antitrust and labor laws. The core of the dispute was a collective bargaining agreement provision mandating that all sheet metal fabrication be performed within Local 38's geographical jurisdiction, which plaintiffs argued constituted an illegal trade barrier. Defendants countered that the provision was a lawful work preservation clause, protected under labor law exemptions. The court ultimately ruled that the challenged clause was neither a valid work preservation measure nor exempt from antitrust scrutiny. Consequently, the court granted the plaintiffs' motion for a declaratory judgment, declaring the provision void and unenforceable due to its violation of both the National Labor Relations Act and the Sherman Antitrust Act.