SIN or Social Insurance Number is a nine digit number that is needed by an individual who wishes to work in Canada or aspire to have access to government programs and benefits.
Social Insurance Number or SIN is unique for every individual which in simple terms means that social insurance number issued to a particular person cannot be used by any other individual in any circumstances. It is illegal to use a social insurance number that is already used by someone.
A person is responsible for protecting his or her social insurance number. Service Canada nowadays is issuing social insurance numbers in paper format. But a SIN card that has not expired and is currently in circulation can still be taken in use. Also if someone has a newborn then he or she has the facility to apply for their child’s social insurance number via the Newborn Registration Service.
