What must employers ensure in a right-to-work state regarding union membership?

In a right-to-work state, the law stipulates that employment cannot conditionally depend on an individual's union membership status. This means that employers are prohibited from requiring employees to be members of a union or to pay union dues as a condition of employment or continued employment. This legal framework is designed to allow workers the freedom to choose whether or not to join a union without facing penalties or losing job opportunities.

The correct option emphasizes the fundamental principle of right-to-work laws, which aim to protect workers' rights to make independent choices regarding union affiliation without coercion. Understanding this principle is crucial in navigating the complexities of labor relations and ensuring compliance with applicable laws.