Kate писал(а):А что плохого может сделать мне гипотетическоге частное лицо, знающее мой SIN?
When should you provide your Social Insurance Number?
You usually need to provide your SIN:
* to your employer
* for income-tax purposes
* to financial institutions where you are earning interest or income
* to receive Canada Pension Plan (CPP), Old Age Security (OAS), or Régie des rentes du Québec (RRQ) benefits
* to receive Employment Insurance (EI) benefits
* to set up a Canada Education Savings Grant (CESG) or a Registered Education Savings Plan (RESP)
* to receive the Canada Child Tax Benefit
* to receive Canada Student Loans
* for goods and services tax (GST)⁄harmonized sales tax (HST) claims
* to receive social-assistance benefits
* for veterans’ benefits and programs
* to receive Workers Compensation benefits
* to receive child-support payments
When should you not provide your SIN?
In some situations, private-sector organizations may ask you to provide your SIN. Please note that, although this practice is strongly discouraged, it is not illegal.
Here are examples of when you
do not have to provide your Social Insurance Number or show your card:
* proving your identity (except for specific government programs)
* completing a job application (before you get the job)
* completing an application to rent a property
* negotiating a lease with a landlord
* completing a credit-card application
* cashing a cheque
* applying for a video-club membership
* completing some banking transactions (mortgage, line of credit, loan)
* completing a medical questionnaire
* renting a car
* subscribing to a long-distance or cellular telephone service
* writing a will (in Quebec, it is not mandatory to provide a SIN)
* applying to a university or college
http://www.servicecanada.gc.ca/eng/sin/ ... rsin.shtml