 In November voters rejected California Proposition 19 (2010), which would have legalized recreational marijuana use, imposed no state taxes, and allowed employers to fire an employee for workplace use of marijuana only after showing it had caused impaired work.In 2012, voters passed Washington Initiative 502 and Colorado Amendment 64, which legalized recreational marijuana use in those states.Two other states followed later in 2014, when voters passed Oregon Ballot Measure 91 (2014) and Alaska Measure 2 (2014).