Are yellow-dog contracts legal in the aviation industry?

Yellow-dog contracts, which are agreements between employers and employees in which the employee agrees not to join or remain a member of a labor union, are generally considered illegal in the United States. The Norris-LaGuardia Act of 1932 specifically prohibits these types of contracts in order to protect workers' rights to organize and engage in collective bargaining activities without fear of retaliation or coercion from their employers.

As a result, in the context of the aviation industry—and indeed in most sectors—these contracts cannot be enforced legally. This legal protection supports the rights of workers to unionize and negotiate collectively for better working conditions, wages, and other employment terms.