Jurisdictional strike is a concept in United States labor law that refers to a concerted refusal to work undertaken by a union to assert its members’ right to particular job assignments and to protest the assignment of disputed work to members of another union or to unorganized workers. The Taft-Hartley amendments to the National Labor Relations Act empowered the National Labor Relations Board to resolve such jurisdictional disputes and authorized the General Counsel of the NLRB to seek an injunction barring such strikes. The NLRB, almost without exception, resolves jurisdictional disputes on the basis of the employer's preference in assigning work, with efficiency, custom and practice and contractual obligations playing at most a secondary role.

Jurisdictional strikes occur most frequently in the United States in the construction industry. Construction unions frequently resolve those disputes through a privately created adjustment system.

See also

• Jurisdiction