Responding to several points of concern regarding the use of face coverings in the workplace, OSHA issued detailed policy guidance supporting their use. Adding to its COVID-19 FAQs, OSHA posted an answer to the question, “Does wearing a medical/surgical mask or cloth face covering cause unsafe oxygen levels or harmful carbon dioxide levels to the wearer?” OSHA’s answer attests to both the safety of wearing face coverings and that it does not, by itself implicate certain OSHA standards.