In regard to labor-management relations, the federal government has generally adopted a compulsory unionism policy. This approach is prescribed for most private-sector employers through the National Labor Relations Act,[6] though there are other federal laws that involve labor relations and allow for compulsory collective bargaining.*

The manner in which federal labor laws interact with state laws is important to understanding the role of right-to-work laws. The "supremacy clause"[7] of the U.S. Constitution means that federal laws supersede any state law that might conflict with them. The U.S. Supreme Court has ruled that federal legislation, through a pre-emption doctrine based on the supremacy clause, may render a state law inoperative:

"A fundamental principle of the Constitution is that Congress has the power to preempt state law. Even without an express provision for preemption, we have found that state law must yield to a congressional Act in at least two circumstances. When Congress intends federal law to ‘occupy the field,’ state law in that area is preempted. And even if Congress has not occupied the field, state law is naturally preempted to the extent of any conflict with a federal statute. We will find preemption where it is impossible for a private party to comply with both state and federal law and where ‘under the circumstances of [a] particular case, [the challenged state law] stands as an obstacle to the accomplishment and execution of the full purposes and objectives of Congress.’"[8]

A federal district court in Oklahoma has also determined that where Congress is silent, "Rules of statutory construction dictate that the court should find the federal government exempt from the application of state statutes which attempt to regulate any collective bargaining agreement to which the federal government is a party."[9]

Further, the U.S. Constitution’s "commerce clause" gives Congress the power to prevent state right-to-work laws from becoming legally effective. For example, in Ry. Employes’ Dep’t. v. Hanson,[10] the Supreme Court in 1956 held that a railroad union could enforce a security clause related to a union-shop agreement. While recognizing, "Powerful arguments have been made … that the longrun [sic] interests of labor would be better served by the development of democratic traditions in trade unionism without the coercive element of the union … shop,"[11] the court held that the Railway Labor Act, which explicitly allowed union shops,[12] trumped the right-to-work amendment in the Nebraska Constitution.

Although this pre-emptive power exists, Congress has not used it in every instance. Importantly, section 14(b) of the NLRA explicitly allows state right-to-work laws:

"Nothing in this subchapter shall be construed as authorizing the execution or application of agreements requiring membership in a labor organization as a condition of employment in any State or Territory in which such execution or application is prohibited by State or Territorial law."[13]

Because state right-to-work laws are permitted under the NLRA, the overwhelming majority of employees within a state will receive the benefits of right-to-work provisions, even though the coverage of some employees will be pre-empted by other federal labor statutes. In effect, state right-to-work laws establish about as much labor-relations freedom as is possible under current federal labor law.**

* For example, The Railway Labor Act governs labor relations in the railroad and airline industries. (See 45 U.S.C. § 151 et. seq.) The Civil Service Reform Act applies to most federal agency employees. (See 5 U.S.C. § 7101 et. seq.) The Postal Reorganization Act concerns postal employees. (See 39 U.S.C. § 1203.)

The Railway Labor Act prohibited union-shop agreements from 1934 until 1951. (See Ry. Employes’ Dep’t, 231.)

** Note that a state law or constitutional amendment that attempted to establish a statewide free market in labor relations policy would conflict with the NLRA’s provision establishing private-sector unions’ monopoly bargaining power and would be overturned in court. In fact, such a law would be pre-empted not only by the NLRA, but also by other federal labor laws, such as the Railway Labor Act.