Final answer:
Union salting was declared to be a legal tactic in the Supreme Court decision of NLRB v. Town and Country Electric. This decision confirms that the strategy of unions placing members in non-union workplaces to organize from within is lawful.
Step-by-step explanation:
The Supreme Court decision that declared union salting to be a legal tactic is NLRB v. Town and Country Electric. Union salting is a strategy used by labor unions wherein union members seek employment at a non-union company, with the intent of organizing the workforce from within. This tactic was upheld by the Supreme Court, ensuring that the practice was considered legal under the law.
The National Labor Relations Board (NLRB) plays a crucial role in enforcing labor laws and addressing disputes between unions and employers. The Wagner Act established the NLRB, aiming to protect the rights of workers to organize and to ensure fair labor practices. The decision of NLRB v. Town and Country Electric aligns with the pro-union rulings that have historically shaped labor laws in the United States.