Workers will have to mask up in common areas of the offices and public indoor settings. Only those who are fully vaccinated can attend indoor events of 25 or more people. Unvaccinated employees will have to undergo testing at least twice a week.
The moves come amid a new surge of the virus, thanks to the Delta variant.
"Given that the CDC has stated more than 80% of counties across the U.S. have substantial or high community transmission rates, we will follow this guidance nationally for the time being," the company wrote in a memo.