The White House slammed a federal judge’s ruling on Thursday as “absurd and unconstitutional” after he ordered the Trump administration to reinstate thousands of federal employees who were fired last month.

William Alsup, the Senior U.S. District Judge of the Northern District of California, ruled Thursday that multiple agencies must extend offers to fired employees.

The federal judges, one in the US state of Maryland, the other in California, separately found legal problems with the way the mass terminations were carried out. District Judge James Bredar in Maryland ruled that 18 of the agencies which had fired probationary employees en masse in recent weeks violated regulations governing the laying off of federal workers.