More than 90% of its pilots and 80% of flight attendants already have done so. Employees must provide proof they are fully vaxxed five weeks after federal officials approve the vaccines, expected by October 25. Google, Facebook, Tyson Foods, and Microsoft are among other large companies following suite. Walmart Is requiring all employees to be vaccinated. Uber is requiring its office staff to be vaccinated. Last month, the Department of Veterans Affairs became the first federal agency to require vaccines for its 115,000 health workers. President Biden announced last week that federal workers will be required to sign forms attesting they've been vaccinated or comply with new rules on masking, weekly testing, distancing, and more. -GEG

United is the first large airline to mandate vaccines for its workforce, putting pressure on rivals.

Employees must be vaccinated five weeks after the FDA fully approves a Covid vaccine or five weeks after Sept. 20, whichever is first.

CEO Scott Kirby said in January he wanted to mandate vaccines and that other companies should do the same.