Arnold & Porter Kaye Scholer joins the growing ranks of large law firms now requiring all staff and lawyers be vaccinated for the coronavirus—or face being locked out of the building—while also delaying its office return date.

In an Aug. 11 internal memo obtained by, Sean Howell, the Washington-based firm’s chief operating officer, wrote that Arnold & Porter had moved its office return date from Sept. 13 to Oct. 18 to account for “the current increase in COVID cases throughout the country.”