FILE - In this Oct. 20, 2015 file photo, signage sits outside Google headquarters in Mountain View, Calif. Google is postponing a return to the office for most workers until mid-October and rolling out a policy that will eventually require everyone to be vaccinated once its sprawling campuses are fully reopened in an attempt to fight the spreading Delta variant. (AP Photo/Marcio Jose Sanchez, File)Marcio Jose Sanchez
