Labor has two options now that its ability to extract mandatory dues from workers as a condition for employment is gone. It can fight the law or try to persuade workers to voluntarily pay up.

Union bosses aren't accustomed to the second approach, so until the next elections in 2014 they can be expected to try everything to overturn the law and to stop the right-to-work fever from spreading to neighboring states.

via Unions Begin Long War After Stunning Blow in Michigan - Bloomberg.