American Airlines and United Airlines say they will begin to furlough 32,000 employees after lawmakers and the White House failed to agree on a broad pandemic relief package that includes more federal aid for airlines.

American Airlines CEO Doug Parker said that if Washington comes up with a deal with $25 billion for airlines “over the next few days,” the company will reverse 19,000 furloughs set to begin Thursday and recall the workers.

United said the impasse forced it to furlough 13,000 workers. United said it told leaders in the Trump administration and Congress that if payroll aid is approved in the next few days, it too could undo the furloughs.

The moves by two of the nation’s four biggest airlines represent the first — and likely the largest part — of involuntary job cuts across the industry in coming days.