Hold the phone In a last-minute decision, White House decides not to terminate NASA employees It was not immediately clear what changed. Eric Berger Feb 18, 2025 7:52 pm | 25 NASA worm. That is all. Credit: Trevor Mahlmann NASA worm. That is all. Credit: Trevor Mahlmann Story textSizeSmallStandardLargeWidth *StandardWideLinksStandardOrange* Subscribers only Learn moreUnlike workers at many other federal agencies this week, probationary employees at NASA were not terminated on Tuesday.For much of the day employees at the space agency anticipated a directive from the White House Office of Personnel Management to fire these employees, but it never came. "We were on pins and needles throughout the day," said one senior official at Johnson Space Center in Houston on Tuesday afternoon.However, by late in the afternoon, several field center directors received confirmation from the White House that their probationary employeesof which there are more than 1,000 across the agency's headquarters and 10 field centerswould not be terminated. NASA had sought exemptions for all of these employees, who comprise about 6 percent of NASA's workforce. Ars could not confirm whether the reprieve applied to some field centers or all 10 of them.The Trump administration has sought to fire federal employees at several federal agencies who are in the "probationary" period of their employment. This includes new hires within the last one or two years or long-time employees who have moved into or been promoted into a new position.So what changed?It was not immediately clear why. A NASA spokesperson in Washington, DC, offered no comment on the updated guidance. Two sources indicated that it was plausible that private astronaut Jared Isaacman, whom President Trump has nominated to lead the space agency, asked for the cuts to be put on hold.Although this could not be confirmed, it seems reasonable that Isaacman would want to retain some control over where cuts at the agency are made. Firing all probationary employeeswhich is the most expedient way to reduce the size of governmentis a blunt instrument. It whacks new hires that the agency may have recruited for key positions, as well as high performers who earned promotions.The reprieve in these terminations does not necessarily signal that NASA will escape significant budget or employment cuts in the coming months.The administration could still seek to terminate probationary employees. In addition, Ars reported earlier that directors at the agency's field centers have been told to prepare options for a "significant" reduction in force in the coming months. The scope of these cuts has not been defined, and it's likely they would need to be negotiated with Congress.Eric BergerSenior Space EditorEric BergerSenior Space Editor Eric Berger is the senior space editor at Ars Technica, covering everything from astronomy to private space to NASA policy, and author of two books: Liftoff, about the rise of SpaceX; and Reentry, on the development of the Falcon 9 rocket and Dragon. A certified meteorologist, Eric lives in Houston. 25 Comments