Elon Musk caused alarm among federal employees and drew ire over an email sent on Saturday requesting that employees summarize their work for the week, and warning on social media that a failure to do so would be taken as a resignation.

Elon Musk is vowing yet again to fire any federal workers who don’t respond to an email asking them to list five things they accomplished last week.

Elon Musk’s presence at President Donald Trump’s first Cabinet meeting on Wednesday will solidify his power in the administration — and how quickly he’s amassed it despite not being elected or Senate confirmed.