Unfair labor practices are laid out in the National Labor Relations Act (NLRA) and concern a set of unlawful actions that employers and labor unions can be prosecuted for.
Refusing to bargain or hear arguments from a labor union, for instance, is an unlawful action for an employer to take against his or her employees.
National Labor Relations Act
Section eight of the National Labor Relations Act delineates unfair labor practices that employers or labor unions sometimes engage in.
If, for instance, an employer attempts to disrupt the forming or administration of a labor union, then that employer might open himself up to investigation by the National Labor Relations Board (NLRB), which enforces the National Labor Relations Act and protects workers' rights.