President Joe Biden announced a national vaccine mandate Thursday that will affect approximately 100 million workers. It will require all federal workers and contractors to get vaccinated. It will also necessitate large companies to require their employees either to participate in weekly testing or else be vaccinated.

“My job as president is to protect all Americans,” Biden said. “So, tonight, I’m announcing that the Department of Labor is developing an emergency rule to require all employers with 100 or more employees that together employ over 80 million workers to ensure their workforces are fully vaccinated or show a negative test at least once a week.”