Norris–La Guardia Act

[1] It banned yellow-dog contracts, barred the federal courts from issuing injunctions against nonviolent labor disputes, and created a positive right of noninterference by employers against workers joining trade unions.

The common title comes from the names of the sponsors of the legislation: Senator George W. Norris of Nebraska and Representative Fiorello H. La Guardia of New York, both Republicans.

It also establishes that employees are free to form unions without employer interference and prevents the federal courts from issuing injunctions in nonviolent labor disputes.

The three provisions include protecting worker's self-organization and liberty or "collective bargaining", removing jurisdiction from federal courts vis-a-vis the issuance of injunctions in non-violent labor disputes, and outlawing the "yellow-dog" contract.

Section 13A of the act was fully applied by the Supreme Court of the United States with a 1938 decision, New Negro Alliance v. Sanitary Grocery Co., in an opinion authored by Justice Owen Roberts.