In the case of Local 174, Teamsters, Chauffeurs, Warehousemen & Helpers of America v. Lucas Flour Co., the U.S. Supreme Court ruled on a labor dispute involving breach of contract and strike activity. The union had gone on strike despite a no-strike clause in their collective bargaining agreement with Lucas Flour Company. When sued for damages by the company due to losses incurred during the strike, they argued that federal law pre-empted state law regarding breaches of labor contracts and thus should be handled through National Labor Relations Board (NLRB) procedures rather than civil court proceedings under state law. The Supreme Court disagreed with this argument and held that while federal labor laws did indeed govern conduct like strikes or lockouts, it didn't prevent states from enforcing contractual obligations between unions and employers as long as those enforcement actions did not conflict with federal policy or interfere with NLRB jurisdiction over unfair labor practices. This decision clarified that although national legislation regulates many aspects of industrial relations in order to promote stability within industries across states; individual agreements made at local level can still have legal force if they do not contradict these broader policies.

In the dissenting opinion for Local 174, Teamsters, Chauffeurs, Warehousemen & Helpers of America v. Lucas Flour Co., Justice Whittaker argued that the majority's decision to allow state courts to interpret collective bargaining agreements under state law was a mistake. He believed this would lead to inconsistent interpretations and undermine national labor policy. Instead, he suggested that federal common law should be used in these cases as it would provide uniformity across states and better align with national labor objectives. Furthermore, he disagreed with the majority’s view that allowing state court jurisdiction did not interfere with National Labor Relations Board (NLRB) authority; rather he contended it could potentially conflict or overlap causing confusion and inefficiency within the system.