Also - no - even if you are running your company in somewhat bizarre way where you "take money as and when you need it" from now on if there is a profit - he is entitled to 20% share of the profit. If you, for whatever strange reason, don't take your share of the profit - he still is entitled to his cut.
It's also a situation that requires law and contract and you agreeing on what is actually "shared":
- does he participate in 20% of company's profit from as it is now in perpetuity, and thus is straight away entitled to 20% of everything your company currently has in bank accounts plus stock, plus assets
- is he only entitled to 20% of assets, stock and dividends from this point onward - regardless of how much the company earned in previous years?
- is there a limitation to what he can do with his 20% - if he decides to sell his stake to your competitor the next day, or make the rest of the crew shareholders etc
I think, in most cases it is more practical to offer someone annual bonus of 20% profits, rather than make them shareholders.