CARSON CITY, Nev. (CNN) -- Nevada is answering a question you've probably wondered about: Are employers allowed drug test for marijuana in a state where it is legal?
Starting in 2020, Nevada will bar employers in the state from discriminating against workers for marijuana use. They'll still be allowed to administer pre-employment screenings for other drugs - but, a positive result for cannabis cannot be used not to hire someone.
There are some exceptions:
People applying for jobs as firefighters, EMTs, jobs that require driving a vehicle, or any job where the federal government requires testing will have to test negative for pot.
So far, Nevada is the only state to prohibit employers from requiring applicants to pass a marijuana test.
Nevada's governor signed the bill into law last week.