International Ass'n of Machinists v. Street

International Association of Machinists v. Street, 367 U.S. 740 (1961), was a United States labor law decision by the United States Supreme Court on labor union freedom to make collective agreements with employers to enroll workers in union membership, or collect fees for the service of collective bargaining.

Judgment
The Supreme Court held that "a union may constitutionally compel contributions from dissenting nonmembers in an agency shop only for the costs of performing the union's statutory duties as exclusive bargaining agent."