There are many many instances where the CEO is not an employee, but they operate via their own legal entity. To be honest I don't know how this works at larger companies.
I'd never heard of this. It turns out it is very rare for publicly traded companies [1]. In these cases, I would guess it comes down to contract terms. But again, it's not as though the law would compel an individual to continue working at a company. It would just come down to what the contracts say, and, potentially, how the courts interpret those contracts in the event of a lawsuit.
[1] Examples I found: Worksport Ltd., Exicure, Inc., Rainmaker Worldwide Inc., and Acorn Energy, Inc.
it simply works, that's how you optimise tax on million+ sums, do you think ceo-s pay taxes on par with regular workers?
A contractor CEO? I know it is extremely common for directors to be contractors for tax reasons.
I have never heard of this. Do you mind sharing some examples?