President Donald Trump and Elon Musk have upended the federal workforce, firing top officials, grinding billion-dollar agencies to a halt and convincing tens of thousands of workers to voluntarily leave their jobs.

The administration set a deadline for Thursday at 11:59 p.m. Eastern for employees to decide on the offer. But a federal judge in Massachusetts paused the deadline until at least a hearing set for Monday at 2 p.

President Donald Trump’s shutdown of the US Agency for International Development was challenged in court by unions representing federal employees, which say the freeze on foreign aid is causing a global humanitarian crisis and costing thousands of American jobs.

Federal workers associations filed suit late Thursday asking a federal court to stop the Trump administration’s “effective dismantling” of the lead U.S. aid agency. The lawsuit by the American Foreign Service Association and the American Federation of Government Employees comes as the new Trump administration and ally Elon Musk