A federal judge has delivered a major blow to the Trump administration’s attempt to fire federal workers, ordering the reinstatement of hundreds of employees with full back pay after finding the terminations violated federal law.

U.S. District Judge Susan Illston of the U.S. District Court for the Northern District of California ruled on December 17, 2025, that the administration unlawfully fired federal employees during the government shutdown.

The ruling came in a lawsuit filed by the American Federation of Government Employees, the American Foreign Service Association, and the National Federation of Federal Employees. These unions represent over 800,000 workers across the federal government.

The federal government shutdown had created chaos across multiple agencies, with hundreds of employees receiving termination notices. More than 4,100 workers received reduction-in-force notices affecting the Department of State, Department of Education, Small Business Administration, and General Services Administration.

Judge Illston found the firings were illegal and in excess of authority, noting it was ‘far from normal for an administration to fire line-level civilian employees during a government shutdown as a way to punish the opposing political party.” The ruling came after the administration continued layoffs despite a short-term spending law passed on November 12, 2025, that ended the shutdown. That law included specific provisions that prohibited reductions in force and required the rollback of shutdown firings.

The legislation, which funds the government through January 30, 2026, explicitly barred the administration from continuing the termination process. Despite this clear congressional directive, Russell Vought, director of the Office of Management and Budget, attempted to move forward with the firings.

During a hearing on Wednesday, Illston criticized the administration’s actions, emphasizing the real-world consequences for workers whose health care coverage was interrupted.

Danielle Leonard, an attorney representing the federal worker unions, argued that Congress had made its intentions unmistakably clear. “We have Congress stepping in here and being incredibly clear here about what the public interest is,” Leonard told the court.

The judge had previously taken action on this issue. On October 15, 2025, Illston issued a temporary restraining order after layoff notices were sent to federal employees on October 10, 2025. At that earlier hearing, she described the administration’s approach as chaotic and poorly conceived.

The December ruling specifically blocks 250 terminations at the Department of State. On December 5, 2025, those firings had been temporarily halted, and now the judge has made that protection more permanent while the underlying lawsuit continues.

Brad Rosenberg, a Justice Department attorney, attempted to argue that the law did not cover ongoing administration efforts to implement reductions in force that predated the shutdown. He contended the legislation only prohibited new notices, not the completion of termination processes already underway.

Judge Illston rejected that interpretation. When Rosenberg suggested it would be difficult for agencies to rehire terminated employees, the judge sharply responded that “they should have been lifting since the statute was passed.”

The case originated from an Office of Management and Budget memorandum about allowing reductions in force during the government shutdown. As the shutdown continued, the lawsuit evolved to address two distinct groups of workers: those fired during the shutdown and those the government attempted to terminate after operations resumed.

The administration’s efforts included rescinding layoff notices sent during the shutdown and immediately reissuing them in an apparent attempt to circumvent the congressional prohibition. Democracy Forward, which represents the unions alongside other legal organizations, characterized this maneuver as a brazen defiance of federal law.

The ruling represents a significant assertion of congressional authority over executive branch actions. The short-term spending law that ended the shutdown included language specifically designed to protect federal workers from politically motivated terminations during budget disputes.

Federal employees affected by the decision work across crucial government functions. The firings had targeted workers at agencies responsible for education policy, foreign service operations, small business support, and administrative services. The disruption caused by the termination notices extended beyond job losses to include interrupted health care coverage and financial uncertainty for hundreds of families.

The legal battle continues even as this preliminary victory protects federal workers. The unions have maintained that the mass firings violated established civil service protections and represented an abuse of executive power during a budget impasse.

Judge Illston indicated she would issue a formal written order following the hearing. That order will provide detailed instructions to federal agencies on how to implement the reinstatements and calculate back pay for affected workers.

The decision comes as Congress and the White House continue negotiations over long-term government funding. The temporary spending measure expires at the end of January 2026, setting up another potential confrontation over budget priorities and the fate of the federal workforce.

For now, hundreds of federal employees who faced termination during one of the most contentious government shutdowns in recent history have won the right to return to their positions. The ruling establishes that congressional funding restrictions carry legal weight that the executive branch cannot simply ignore, even during political standoffs over government operations.