The group took questions from reporters and Musk was asked about an email he recently sent to federal government workers asking them to detail a list of things they have recently done in their job.
He said anyone who does not respond "is presumed dead" or is "a fraudster".
Musk also acknowledged that his so-called Department of Government Efficiency (Doge) will make mistakes, referencing what he said was a brief cancellation of Ebola prevention aid.