New Jersey’s 2021 adult-use cannabis law specified that employers are not allowed to fire workers or suspend them based solely on a positive blood test. That’s good for workers, who can now buy recreational weed at 19 stores in the state, because blood tests for cannabis can be positive even weeks after a person used the drug. “Cannabis is legal here in New Jersey, so it’s important to make sure that people aren’t facing adverse actions at work for engaging in what is permissible under state law,” said Ami Kachalia, a campaign strategist for the American Civil Liberties Union of New Jersey. Bu…