There’s no definitive information online, but Reddit users point towards a relaxed attitude at Trader Joe’s, so drug tests are probably unlikely. But as always, just because a company is chilled, doesn’t mean they don’t have standards! If an employee looks under the influence of drugs or alcohol in the workplace, they could get tested. And those who have accidents at work will also probably have to take a post-accident test.
In a nutshell, Trader Joe’s drug tests seem unlikely, especially in pre-employment. But there may be situations where you could have to take one.