A workers’ board is reinstating – at least temporarily – almost 6,000 fired probationary workers from the Department of Agriculture, according to a newly issued order obtained by CNN.

The firings of over 5,000 probationary employees at the U.S. Department of Agriculture may have been unlawful, and the workers should be reinstated for at least the next 45 days, a federal civil service board ruled Wednesday.

The decision is a blow to the Trump administration’s effort to drastically and quickly shrink the federal bureaucracy.