CDC says NC workers get little legal protection from smoke.
D002487:Centers for Disease Control and Prevention, U.S.; D006801:Humans; D009657:North Carolina; D016273:Occupational Exposure / Q000331:legislation & jurisprudence* / Q000517:prevention & control; D014028:Tobacco Smoke Pollution / Q000331:legislation & jurisprudence* / Q000517:prevention & control; D014481:United States
D014028:Tobacco Smoke Pollution