In the case of Lauf et al. v. E.G. Shinner & Co., 1937, the U.S Supreme Court ruled in favor of a group of employees who were seeking to enforce their rights under a collective bargaining agreement with their employer, E.G. Shinner & Co., despite not being members of the union that negotiated it. The company had argued that only union members could benefit from such agreements but this was rejected by the court which held that all employees covered by an agreement should be able to enforce its terms regardless of whether they are unionized or not. The decision was significant as it confirmed workers' right to collectively bargain and enjoy benefits derived from such negotiations even if they did not belong to any labor organization themselves - effectively reinforcing principles enshrined in federal labor laws at the time.

In the dissenting opinion for Lauf et al. v. E.G. Shinner & Co., it was argued that the Norris-LaGuardia Act, which limits federal courts' power to issue injunctions in labor disputes, should not be interpreted as broadly as the majority did. The dissenters believed that this interpretation would essentially nullify all existing laws against conspiracy and intimidation in labor disputes, thereby giving unions unchecked power to use coercive tactics without fear of legal repercussions. They also pointed out that while Congress intended to protect peaceful picketing and strikes with this act, they did not intend for it to shield violent or threatening behavior from legal action.