Hi,
More information from CIC website:
Working or going to school in Canada
Most visitors to Canada cannot work or study in Canada without a permit.
If you are visiting Canada and you want to work or study, you have a few options if you still have legal status in Canada.
For a new work permit, you can apply:
•from your home country or another country where you are lawfully admitted, or
•by mail only to the visa office in New York.
For a new study permit, you can apply:
•from your home country or another country where you are lawfully admitted, or
•in person or by mail at the Visa Application Centre in Los Angeles.
In some cases, you are allowed to work or study without a permit. For more information, see:
•Study in Canada – Exceptions
•Work in Canada – Jobs that do not need a work permit
Link: http://www.cic.gc.ca/english/visit/arriving.asp
Tks, Thang