More than 4,000 federal employees received layoff notices Friday as part of the Trump administration’s broad effort to reshape the government while it remains shutdown, according to a court filing Friday.

The filing provides greater insight into an announcement from President Donald Trump’s budget chief earlier in the day that the administration had begun government-wide reductions in force that had been anticipated since federal funding lapsed on October 1.

“The RIFs have begun,” Office of Management and Budget Director Russell Vought posted on X, without elaborating on how many federal workers had received RIF — or reduction in force — notices.

As of Friday evening, RIF notices had gone out to employees at the departments of Commerce, Education, Energy, Health and Human Services, Housing and Urban Development, Homeland Security and Treasury, according to department spokespeople, union representatives and sources directly impacted.

Treasury and HHS saw the highest number of reductions, with more than 1,000 workers laid off at each department, according to the filing in a lawsuit brought by two federal employee unions seeking to stop the layoffs.