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.

Billionaire Elon Musk recently agreed with a proposal to conduct mandatory drug testing of federal employees, but contrary to misleading social media posts, no official U.S. government announcement has been issued asking workers to pass a drug test within 30 days or face termination.