The state has little say in the regulation of private labor unions. This is because most of the protections given to labor organizations are contained in the federal National Labor Relations Act. This law is “preemptive,” which means that it overrides state law in the areas that it covers, including almost all types of private employment. But, in the areas it does not cover, such as the rights of public employees, farm workers, and employees of businesses that do not engage in interstate commerce, the states are free to make their own provisions. Although New Hampshire has not adopted a comprehensive labor law that regulates the unionization of employees, the state has several laws governing public employees, strikes, and picketing.