Working in Canada for foreigners is possible under certain conditions, For some work categories you don't need a work permit, for others you have to have a work permit in order to work in Cananda. In some cases you need a Labour Market Impact assessement (LMIA), which means that an employer can't employ a foreigner unless he proves by LMIA that employing you wouldn't decrease the chances of a Canadian citizen or permenant resident to find a job. In other cases your future employer doesn't need LMIA.

You may be in one of the following four situations

Work without a work permit Work without a LMIA LMIA-Based permits Open work permits