It really depends on the job, the boss and the social context. As a quick example: the son of a restaurant owner can get informally hired as the waiter/bartend

It really depends on the job, the boss and the social context. As a quick example: the son of a restaurant owner can get informally hired as the waiter/bartender. He would get a fair share of the profits, possibly inherit the restaurant or its management, and will probably never be fired.