A federal judge has ruled that the Department of Homeland Security broke federal law by directing the Federal Emergency Management Agency toward a 50% workforce reduction, invalidating the legal basis for a plan that would leave the nation’s disaster-response agency with about 11,383 employees. The court ruling, issued late Friday by U.S. District Judge Susan Illston in San Francisco, resolves the central merits question over FEMA staffing but does not yet restore jobs or specify how the agency must proceed.

The decision matters beyond an internal personnel dispute. FEMA coordinates federal assistance when hurricanes, floods, fires, earthquakes and other emergencies overwhelm state and local capacity. Its deployable workforce also supports long recoveries after the immediate danger has passed. Illston found that DHS—not FEMA—drove the reduction and imposed controls on contract renewals without a reasoned explanation, even though Congress expressly limited the department’s authority to diminish FEMA’s role after Hurricane Katrina.

What the judge decided

Illston ruled for the unions on their FEMA-specific claim in American Federation of Government Employees v. Trump, a broader case challenging executive-branch workforce reductions. According to Reuters, the judge concluded that DHS unlawfully usurped FEMA’s authority over its personnel and steered it toward eliminating thousands of disaster-response positions.

The statutory boundary is unusually direct. Under federal law, FEMA must remain a distinct entity within DHS, and the homeland security secretary may not substantially or significantly reduce the agency’s authorities, responsibilities or functions. Congress enacted that protection in the post-Katrina overhaul meant to prevent emergency management from again being weakened by departmental reorganization.

The administration argued that FEMA retains substantial discretion to determine its staffing needs and that managing temporary appointments does not necessarily dismantle an agency function. Illston rejected the way DHS exercised that authority here. She wrote that the record showed no reasoned decision-making behind the reversal of FEMA’s earlier renewal practices or the conditions DHS imposed on future renewals.

The ruling is consequential but not self-executing. Illston did not prescribe remedies, order immediate reinstatements or bar every future workforce change. She invited briefing on relief and said she would address remedies in a separate decision next month. The government may also appeal. Until those steps occur, the practical staffing consequences remain unsettled even though the court has rejected DHS’s legal approach.

A workforce already reduced

The disputed plan did not begin from a stable baseline. An August GAO report found that FEMA employed an average of about 25,134 people in fiscal 2025, while more than 4,300 employees—roughly 17% of the workforce—separated during the year. That was a 55% increase in separations from fiscal 2024. The watchdog said those departures cost the agency institutional knowledge and aggravated longstanding staffing problems.

GAO also found that FEMA rescinded its strategic plan in 2025 and lacked an overall direction on which to base workforce planning. The agency reduced staff through voluntary programs, probationary terminations and nonrenewal of Cadre of On-Call Response and Recovery Employee contracts. A hiring freeze that began in January 2025 remained in place until May 2026, according to the report.

Those employment categories are central to the dispute. FEMA’s reservists are intermittent employees hired to deploy to disasters, while CORE personnel serve time-limited appointments connected to disaster work. These are not simply headquarters positions. They include logistics, public assistance, individual assistance, mitigation and other field functions that expand when multiple emergencies occur at once.

Internal planning described earlier this year contemplated reductions exceeding 10,000 positions. The unions’ January court filing said contracts would be allowed to expire in waves, beginning with dozens of notices and eventually affecting thousands of temporary and on-call responders. FEMA initially disputed characterizations of the planning as a final directive, but Friday’s ruling found that the agency appeared to be advancing toward an upcoming fiscal-year workforce of 11,383—approximately half the earlier level—and that the record did not explain why that number was selected.

Independent oversight had already raised readiness concerns. GAO said FEMA and DHS had not assessed the agency’s present and future staffing needs before reducing the workforce or proposing further changes. The watchdog did not conclude that every reduction would necessarily produce a failed disaster response; rather, it found that leaders lacked the analysis needed to know whether the remaining workforce could perform the mission. That distinction is important: the court decided legality, while GAO evaluated management and preparedness risk.

The administration’s case for change

President Donald Trump has repeatedly argued that states should carry more responsibility for disaster preparedness and recovery and has suggested FEMA could be abolished or substantially restructured. Supporters of that approach say states are closer to local needs, federal programs can be slow and fragmented, and an agency with a large temporary workforce should be able to adjust staffing as disaster workloads change.

The administration also received a new Senate-confirmed FEMA leader in August. Cameron Hamilton returned to the agency after having previously resisted eliminating it, inheriting what AP reported was an organization facing staff losses, grant disruptions and disaster-aid delays. His confirmation created a potential path for reform within FEMA rather than a reduction imposed from elsewhere in DHS.

But Congress did not give the executive branch unlimited flexibility to transfer or hollow out FEMA’s core functions. Illston’s decision rests on that institutional division: DHS oversees FEMA, yet the post-Katrina statute preserves FEMA’s identity and operational authority. The ruling does not prevent the agency from managing performance, ending individual appointments or redesigning work. It says the department cannot use staffing control to accomplish a substantial reduction in FEMA’s functions without complying with the law.

Deleted messages deepen the dispute

In a separate discovery ruling, Illston found that FEMA and DHS officials used Signal on personal phones to discuss the staffing reductions and deleted messages that should have been preserved. She said the missing communications would have been relevant and imposed an adverse inference: as the case proceeds, the court will presume the lost messages would have been unfavorable to the government because they would have supplied further evidence of unlawful conduct.

That finding does not independently prove every allegation made by the unions, and it does not establish that all use of an encrypted messaging application is unlawful. It does strengthen the plaintiffs’ position on intent and decision-making because the government cannot benefit from the absence of communications that should have been retained. It may also shape the remedy and any later appellate review of the factual record.

What happens next

The immediate question is relief. The unions can ask Illston to stop implementation of the 11,383-person plan, restore renewal authority to FEMA, reconsider affected appointments or require a lawful planning process. The government can argue for narrower relief, emphasizing that staffing levels change and that courts should not manage an executive agency’s personnel system. Any injunction could quickly reach the Ninth Circuit and potentially the Supreme Court, which previously intervened in the wider federal downsizing case.

Operationally, FEMA must continue responding while the litigation proceeds. The agency cannot assume the ruling automatically provides thousands of trained workers, and states cannot assume federal capacity has already been restored. Contract expirations, rehiring, training and deployment readiness all move on different timelines. The difference between a legal victory and additional people available for the next major disaster could therefore be measured in months.

The confirmed change is nonetheless substantial: a court has rejected DHS’s authority to drive FEMA toward half its prior workforce without a reasoned, lawful basis. What remains uncertain is whether the remedy will stop the reductions before they become embedded, how much operational capacity can be recovered, and whether an appeal will delay or narrow the decision during an active disaster season.