In an effort to slow the spread of the Delta variant of the Covid-19 virus, President Biden announced (in a July 29, 2021 White House Fact Sheet, as well as at a press conference) that on-site federal contractor employees will be asked about their vaccination status and if not fully vaccinated, be required to wear a mask and undergo COVID testing:

"[E]very federal government employee and onsite contractor will be asked to attest to their vaccination status. Anyone who does not attest to being fully vaccinated will be required to wear a mask on the job no matter their geographic location, physically distance from all other employees and visitors, comply with a weekly or twice weekly screening testing requirement, and be subject to restrictions on official travel."

President Biden is also directing his team to develop a plan to

“take steps to apply similar standards to all federal contractors.”

The administration will also “encourage employers across the private sector to follow this strong model.”