Which labor law prevented management from obtaining injunctions against labor disputes?

The Norris-LaGuardia Act is significant because it established the principle that labor disputes should be resolved through negotiation and collective bargaining rather than through court injunctions. This law specifically restricted the ability of federal courts to issue injunctions in labor disputes, providing greater protection for the right of workers to organize and engage in collective activities without interference from management through legal means.

The Anti-Injunction Act complements this by limiting the circumstances under which federal courts can intervene in labor disputes, reinforcing the non-interference stance of the government in the collective bargaining process between employees and employers. Together, these two pieces of legislation create a robust framework that protects labor’s right to organize and engage in concerted activities without the threat of legal action aimed at quelling such efforts.

The Wagner Act, while also a critical piece of labor legislation, primarily focused on establishing rights for workers to engage in union activities and collectively bargain rather than addressing injunctions. Thus, it does not serve the same function as the Norris-LaGuardia Act and the Anti-Injunction Act in relation to management's ability to obtain injunctions against labor disputes.