United Airlines will require its 67,000 U.S. employees to get vaccinated, a first for U.S. carriers

United Airlines will require its 67,000 U.S. employees to get vaccinated against Covid by no later than Oct. 25 or risk termination, a first for major U.S. carriers that will likely ramp up pressure on rivals.

Airlines including United have so far resisted vaccine mandates for all workers, instead offering incentives like extra pay or time off to get inoculated. Delta Air Lines in May started requiring newly hired employees to show proof of vaccination. United followed suit in June.

United’s requirement is one of the strictest vaccine mandates from a U.S. company and one that includes employees who interact regularly with customers like flight attendants and gate agents.

U.S. companies such as Facebook announced employees to prove that they have been vaccinated to return to the office. Others are requiring them for only for certain workers. Walmart, for example, said last week that it will be required for corporate staff and management-level employees. Uber said U.S. office staff will need to be vaccinated to return to the office but stopped short of requiring them for drivers.

Meatpacker Tyson Foods said this week its 120,000 U.S. employees must be are fully vaccinated this year, though more than 50,000 already are.

“We know some of you will disagree with this decision to require the vaccine for all United employees,” United CEO Scott Kirby and President Brett Hart said Friday in an employee note. “But, we have no greater responsibility to you and your colleagues than to ensure your safety when you’re at work, and the facts are crystal clear: everyone is safer when everyone is vaccinated.”

United Airlines employees must upload proof that they received two doses of Pfizer or Moderna vaccines or one dose of Johnson & Johnson’s single dose five weeks after federal officials give full approval to them or by Oct. 25, whichever is first, the executives said. Exceptions will be made for certain health issues or religious reasons, United said.

Many of United’s employees have already reported they have been vaccinated, such as roughly 90% of pilots and 80% of flight attendants, according to company officials.

United didn’t say what the company’s overall vaccination rate is.

The decision was partly driven by concerns about rises in Covid-19 cases last year during the fall and winter, company officials said.