I would say that corporate personhood is a better example. It seems very natural to us, but I'm not sure if it's an idea other intelligent species would also independently arrive at.
I don't see it natural at all. I think it's quite insane concept. A corporation is obviously not a person and even if you pretend it to be a person why only good things come from it for a corporation? Why isn't it sentenced to death and executed when it kills 11 people?
Why corporations are allowed to own other corporations? Isn't it a slavery?
I think GP's example is better, definitely more familiar. That's the fundamental difference between employment and running your own business: you're trading away both the downsides and upsides of business risk, in exchange for a stable, predictable salary.