New Hire is on Drugs

Dear Experts, I just got a new co-worker. He was hired by my boss while I was on vacation. I know for a fact he is on drugs, but my boss is pretty clueless to this stuff. Should I say something? Here is how our CAREEREALISM-Approved Experts answered this question on Twitter:Q#378 Nope. Not your place to say. If they start seriously causing work-related problems, then consider stepping in. (@gradversity) Q#378 Danger in accusing someone w/o proof. Is person not doing job & is it affecting u? Stick 2 those facts. (@juliaerickson) Q#378 U have to have evidence or witnessed the drug use. Otherwise, let the bosses evaluate/drug screen employees. (@resumeservice) Q#378 Have you seen him doing drugs? If not, u can potentially harm his reputation and yours as well. (@DebraWheatman) Q#378 Confide n boss about concerns, however, make sure u talk about FACTS not ideas. (@kgrantcareers) Our Twitter Advice Project (T.A.P.) is no longer an active campaign. To find an answer to the above question, please use the "Search" box in the right-hand column of this website.