As Workers Return, Beware of Counterfeit Face Masks, New Regulations, Experts Say

Now that one state has tied a COVID-19 presumption rebuttal to providing protective measures for workers — and other states are considering similar moves — many employers have to know intricate details about face masks, respirators and other safeguards. And that's easier said than done, an occupational safety expert said Thursday. For starters, many respirator-grade masks, known as “N95” because they are supposed to filter out 95% of microscopic particles, aren't all the same. Thousands of counterfeit masks have now made their way into the U.S. marketplace, sa...