130 Days time limit
Musk is a 'special government employee', and that comes with a time limit of 130 days, then his employment will terminate.
"If it’s really the case that Musk is a mere adviser operating as a special government employee, then he can only stay in that job until May 30, and would have to vacate the White House after that. Most of his DOGE teams, also serving as SGEs, would have to leave too.
...
The “special government employee” designation was intended for members of advisory commissions, who it was thought shouldn’t have to go through cumbersome ethics pledges and financial disclosures to serve on a board and offer advice. As a result, the law was shaped so permanent employees couldn’t serve as SGEs. The federal code is quite clear: An SGE’s term is “not to exceed one hundred and thirty days during any period of three hundred and sixty-five consecutive days.” Ethics rules state that this is based on a “good faith estimate” of how long the government service will take, and that estimate must be made in advance. Any work done on a day is counted as a workday."
https://prospect.org/politics/2025-02-19-elon-musk-only-has-100-days-left-in-government/
If this is the case, then the would account for the haste with which DOGE staff pursued their tasks. But it will be interesting to see what happens at the end of next month.