There are an estimated 200,000 probationary workers — generally employees who have less than a year on the job — across federal agencies.

The Trump administration must halt its firings of thousands of government employees who have been hired in the past two years, dismissals that had no legal justification, a federal judge in San Francisco ruled Thursday.

A federal court said OPM's directives on probationary firings have no legal effect, since the office has no authority to order firings in other agencies.