Salesforce to reopen S.F. headquarters in May, starting with vaccinated workers FacebookTwitterEmail 1of4 From upper right, clockwise: Salesforce East, Salesforce West, Salesforce Tower, 181 Fremont and Millennium Tower. Salesforce plans to reopen its Salesforce Tower offices in mid-May.Roland Li / The ChronicleShow MoreShow Less 2of4 Salesforce plans to reopen its Salesforce Tower offices in mid-May.Roland Li / The ChronicleShow MoreShow Less 3of4 Salesforce plans to reopen its Salesforce Tower offices in mid-May.Roland Li / The ChronicleShow MoreShow Less 4of4 Salesforce will reopen its San Francisco headquarters in mid-May, starting with employees who have been vaccinated, the company said Monday. The tech company, which is the city’s largest private employer, is taking a different approach than other businesses by requiring proof of vaccination for its first volunteers returning to offices. It appears to be the first major Bay Area company to implement that requirement to start. Other companies such as Facebook and Google haven’t required vaccinations as they reopen offices this month.