The SIN is a nine digit number that you need to work in Canada. Without it, Queen's cannot pay you. You must have valid immigration status in Canada to apply for a SIN. There is no fee for the SIN.
If your documentation is in order, you'll get a Social Insurance Number on the spot. You will receive a "Confirmation of SIN" letter to show to your employer. Keep this letter in a safe place.
If your SIN has expired:
If your SIN starts with a 9 it will have an expiry date. Click here to find out how to reapply. There is no cost for a new SIN.