<Li> Clayton, July 1, 2010, banned in all enclosed workplaces, including restaurants; exempts tobacco shops, 20% of hotel and motel rooms, and outdoor areas </Li> <Li> Clinton, March 1, 2015, banned in all enclosed workplaces, including bars and restaurants </Li> <Li> Chillicothe, January 1, 2008, banned in all bars and restaurants, but not all other workplaces by City Council vote of 4--1, after 56% of voters approved of the idea in a referendum; exempts separately ventilated offices occupied exclusively by smokers . </Li> <Li> Columbia, January 9, 2007, banned in all workplaces, including bars and restaurants; exempts rented social halls, separately ventilated offices occupied exclusively by smokers, stage performances, retail tobacco shops, and private clubs with no employees . </Li>

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