In the 1960 case Local 60, United Brotherhood of Carpenters and Joiners of America, AFL-CIO v. National Labor Relations Board (NLRB), the Supreme Court ruled in favor of NLRB. The dispute arose when a local union was accused by an employer for violating section 8(b)(4)(A) of the National Labor Relations Act - which prohibits unions from coercing employers to force their employees into joining a union - through picketing activities aimed at compelling his company to sign an agreement with them. The Union argued that they were not trying to coerce any individual employee but rather seeking recognition from the employer as part of collective bargaining rights. However, based on evidence presented, it was clear that their actions had coerced some employees into joining their ranks against their wills and thus violated said provision. Therefore, despite arguments about First Amendment rights being infringed upon due to restrictions on picketing activity imposed by this ruling, the court upheld NLRB's decision stating that such conduct fell within exceptions allowed under law for regulating labor disputes.

In the dissenting opinion for this case, Justice Frankfurter argued that the majority's decision to uphold a National Labor Relations Board (NLRB) ruling against Local 60 was based on an overly broad interpretation of labor law. He contended that while it is true that unions should not be allowed to engage in unfair practices, such as coercing employers into hiring only union members or forcing employees to join their ranks, there are limits to what can be considered coercion under federal law. In his view, the NLRB had overstepped its bounds by finding Local 60 guilty of violating these provisions simply because they sought and obtained a contract clause requiring contractors who hired non-union workers to pay them at union rates. This action did not amount to coercion but rather represented legitimate collective bargaining activity aimed at protecting union wages and working conditions from being undercut by non-union competition.