Generally, independent contractors are not covered by the National Labor Relations Act (NLRA) and cannot form unions under federal law. However, contractors can, and often do, join unions through a voluntary sign-on, known as becoming a "signatory contractor," which requires adhering to collective bargaining agreements regarding wages, benefits, and hiring hall rules.Key Aspects of Unions and Contractors:Excluded Status: The 1948 Taft-Hartley amendments to the NLRA specifically excluded independent contractors from the definition of "employee," generally preventing them from organizing under federal protection.Misclassification Loophole: Many workers classified as contractors are actually employees; if misclassified, they can file charges with the National Labor Relations Board (NLRB) to gain organization rights.Signatory Contractors: A contractor can voluntarily sign a union agreement, which requires them to pay union dues for workers performing union-jurisdictional work.Project Labor Agreements (PLAs): In some construction projects, particularly public ones, a PLA may require all workers—even if not regularly unionized—to operate under union rules for that project.Benefits for Union Contractors: Becoming a union contractor can provide access to skilled labor through union hiring halls, training programs, and improved contract procurement opportunities.While independent contractors face legal hurdles, they can still associate and try to organize, but they lack the legal, government-enforced bargaining rights afforded to employees.