Musk fumed—and issued another threat—after federal workers were told they didn't have to comply with a demand to justify their jobs.

The deadline given to federal employees by the Office of Personnel Management (OPM) and Elon Musk over the weekend is quickly approaching, but widespread confusion remains as agencies tell workers

OPM also instructed multiple HR departments that failure to reply to the email did not mean automatic termination — despite the Tesla and Space X boss’ warning to the contrary.

The Department of Health and Human Services message comes amid days of confusion after emails from the U.S. Office of Personnel Management and a tweet by Elon Musk.

The lawmakers said in a letter that agency heads should immediately tell staffers to not respond to OPM’s “ill-conceived email stunt” asking them what they accomplished last week.