Uhhh, legally that company would probably own everything the engineer has been working on during office hours. So if it's really promising, then they might let

Uhhh, legally that company would probably own everything the engineer has been working on during office hours. So if it's really promising, then they might let him keep working on it. But he won't own any of it, and he can't keep it if he leaves. I don't agree with it, but I think that's usually how it works, and they would have a strong case.