Are you saying if it were Madonna instead of Adele, then some bodyguard company owner could be retired in Costa Rica on his earnings from "Papa Don't Preach" if

Are you saying if it were Madonna instead of Adele, then some bodyguard company owner could be retired in Costa Rica on his earnings from "Papa Don't Preach" if Madonna had signed such a contract when she started working there as a secretary? Is it contractual only? (OP seemed to indicate that it was any employment, so I'm still wondering what country this might be.)