Here might be another reason for not working for Musk: he asked an executive of his, Jerome Guillen, to "forfeit some unvested equity" because he thought that "

Here might be another reason for not working for Musk: he asked an executive of his, Jerome Guillen, to "forfeit some unvested equity" because he thought that "some employees were making more from Tesla than he thought their contributions merited", per WSJ. I assume that Guillen was going to get the unvested equity if Musk didn't ask, otherwise it wouldn't be an issue at all.