Statewide smoking ban: On May 1, 2010, after being signed into law by Governor Jennifer Granholm on December 18, 2009, the Dr. Ron Davis Law took effect, banning smoking statewide in all enclosed, indoor workplaces in Michigan, as well as the outdoor patios of bars and restaurants. The law exempts only cigar bars, retail tobacco stores, private home offices, company vehicles including commercial trucks, and Detroit 's three casinos ' gambling floors. The law is silent as to whether local governments may regulate smoking more strictly than the state, though it prohibits state or local health departments from enacting any smoking rules different than the law.
when did michigan pass the no smoking law
May 1, 2010