+1(514) 937-9445 or Toll-free (Canada & US) +1 (888) 947-9445
Go here http://www.servicecanada.gc.ca/eng/about/reports/sin/applying.shtml
 
Does one have to have a work authorization or study authorization to get a SIN number? Can one not apply as a visitor? Will appreciate a reply please.
 
Does one have to have a work authorization or study authorization to get a SIN number? Can one not apply as a visitor? Will appreciate a reply please.

Of course you must be authorized to work in Canada to get a SIN.