Applying for a Social Insurance Number (SIN) is one of the most important things you will do after coming to Canada. You will need one to work here, to open a bank account or to obtain your tax credit. This number tells the government who is earning money, paying taxes, paying into pension plans and using government services. Your employers will ask you for this number.
To apply for one, you can go to your nearest Service Canada Centre. For more information, please visit the Service Canada website at www.servicecanada.gc.ca