With private-sector employers and employees uncertain about returning to in-person work, many companies have put a halt on back-to-office plans.

A survey of HR professionals found half of U.S. organizations are concerned about the delta variant, which can be spread by fully vaccinated individuals. Companies including Lyft, Uber, Google, Apple and Twitter have delayed their return-to-office plans or have shut reopened offices.

And while many businesses are reinstating mask requirements for fully vaccinated workers and customers in line with the CDC’s latest guidelines, others are going further and requiring proof of vaccination. 

Mayor Bill de Blasio announced today that New York City will require customers and workers to provide proof of vaccination for indoor dining, gyms and entertainment. New York is the first major U.S. city to issue such a mandate and will roll out an app-based health pass.

And with the Equal Employment Opportunity Commission confirming employers can require staff to get vaccinated, many companies are enacting vaccination requirements for employees. Morgan Stanley, Goldman Sachs and Wells Fargo are requiring employees to get vaccinated or disclose their vaccination status before returning to the office, while United Airlines is mandating vaccines for new hires. 

Other companies have already begun encouraging booster vaccinations if and when one becomes available.

President Biden announced that all federal workers are required to get vaccinated or undergo strict COVID-19 testing. However, unions representing public employees from a variety of industries are pushing back on the mandate in favor of increasing incentives for vaccine-hesitant workers to get the shot.