Universal Camera Corp. v. Nat'l Labor Relations Bd.

Holding that court may not "displace the Board's choice between two fairly conflicting views, even though the court would justifiably have made a different choice had the matter been before it de novo "

National Woodwork Manufacturers Ass'n v. Nat'l Labor Relations Bd.

Holding that union employees' refusal to install third-party manufacturer's product was not prohibited under § 158(b)(B), because it was an action "pressuring the [union members'] employer for agreements regulating relations between [the employer] and his own employees"

Railroad Trainmen v. Terminal Co.

Holding that state court could not issue injunction against peaceful strike sought by third-party railroad terminal operator to avoid economic damages from shutdown of terminal

Labor Board v. Denver Bldg. Council

Affirming Board's assertion of jurisdiction over activities taking place at local construction site based on finding that "any widespread application of the practices charged might well result in substantially decreasing" the flow of interstate commerce

Labor Board v. Fruit Packers

Holding that NLRA section 8(b)(B) does not prohibit "peaceful picketing . . . limited . . . to persuading Safeway customers not to buy Washington State apples when they traded in Safeway stores"

Electrical Workers v. Labor Board

Holding that a union may picket a secondary employer only when the primary employer is at the job site

Bus Employees v. Wisconsin Board

In Bus Employees v. Wisconsin Board, 340 U.S. 383, this Court held that the Wisconsin Public Utility Anti-Strike Law, which made it a misdemeanor for public utility employees to engage in a strike which would cause an interruption of an essential public utility service, conflicted with the National Labor Relations Act and was therefore invalid under the Supremacy Clause of the Constitution.

Steelworkers v. Labor Board

Stating that section 8(b) prohibits labor unions from engaging in "secondary boycotting" by "exert[ing] pressure on an employer not involved in the relevant labor dispute ('the secondary employer') in order to obtain a favorable result in the ongoing labor dispute with another employer ('the primary employer')"

Labor Board v. Servette

Holding under section 8(b) of the Act, 29 U.S.C. § 158(b), that statutory protection for the distribution of handbills would be undermined if a threat to engage in protected conduct were not itself protected

Markwell and Hartz, Inc. v. N.L.R.B