work permit expires..

[Frank25]

Hi, I would like to know, what happens if you come to Canada with a work visa for a year and the owner of that company sells it and
you have no more that job, because your contract is with that company and the new owner won't pay what you were earning before,

what is the best thing to do in that situation? or can that affect that person's  stay in Canada or if he or she notifies to immigration?

or is your former boss responsable of you? what s the best recomendation in that situation?