What are the key differences between right to work and non right to work states in terms of labor laws and union membership?

In right-to-work states, workers are not required to join a union or pay union dues as a condition of employment. This can lead to lower union membership rates and potentially weaker unions. In non right-to-work states, workers can be required to join a union or pay union dues, which can result in higher union membership rates and stronger unions.