In any case, I would suggest saving up an emergency fund to the point that you are not scared of losing your job. I understand making that people must make commitments (car payments, mortgages, student loans, etc.) and that the risk of not paying them off is always there. But I would hope that a millionaire of all people has enough collateral for a loan if necessary, and that they would have good enough credit to be approved.
If you have your finances in order, you should not be scared of losing your job. Having actual fear from the thought means that maybe your assets aren't working for you (they are all deprecating assets or the cost of their upkeep is higher than the return). The one thing that can and should terrify you is illness or injury that makes you unable to work.