Unfortunately JCoure it doesn't seem that you understand much...

Unfortunately JCoure it doesn't seem that you understand much about these visas.

The people you often see at convenience stores are here on student visas which permits them to work a certain number of hours a week. Where someone has a skilled visa, they're typically on what's known as a "closed work permit" where their visa is bound to working for a particular employer for a certain period of years (sometimes 3-4) till their permanent residency is processed.

Once they're granted rights to permanent residency they're free to do what they want.