President Donald Trump backed Elon Musk’s demand that federal employees explain their recent accomplishments by the end of Monday or risk getting fired, even as government agency officials were told that compliance with Musk’s edict was voluntary.

The nation’s HR leaders suddenly don’t seem keen to obey Elon Musk’s weekend threat. Responding to the president’s request that he become “more aggressive” in sizing down the federal government, Musk wrote in a social media post Saturday that all federal employees must self-report five things that they achieved in the previous week before midnight on Monday or face immediate termination.