Which U.S. law declared labor organizations exempt from antitrust injunctions in certain disputes?

The Clayton Antitrust Act declared labor organizations exempt from antitrust injunctions in certain disputes.

Congress passed the Clayton Act in 1914 to strengthen U.S. antitrust law. Section 6 stated that labor was not a commodity and that labor organizations were not illegal combinations under antitrust principles merely because they existed or pursued legitimate objectives.

The act also addressed court injunctions in labor disputes and stated that the labor of a human being was not an article of commerce. These provisions were intended to prevent workers’ organizations from being treated like business monopolies.

The law’s protection was not absolute in practice. The Supreme Court’s decision in Duplex Printing Press Co. v. Deering in 1921 interpreted the labor provisions narrowly, helping prompt later reforms. The Norris–La Guardia Act of 1932 more directly restricted federal labor injunctions.