Michigan became the 24th right-to-work state in December of last year after its Republican Governor Rick Snyder approved "right to work" bills covering both public and private sector unions. These bills will go into effect in March of this year. The unions, comprised of the AFL-CIO, Michigan Building Trades Council, International Brotherhood of Teamsters and Service Employees International Union, claim that so much of the right-to-work law is unconsititutional that the whole thing should be thrown out by the U.S. District Court. This lawsuit covers only private sector workers. Two other lawsuits have been filed challenging Michigan's right-work-laws.