Many jobs in Canada require a work permit. While some require just work permit, others require work permit with a positive LMIA (Labour Market Impact Assessment).
Applicants cannot apply for the LMIA on their own but employers are required to apply for the (LMIA) on behalf of the employee before they can hire a foreign worker. In order to obtain a positive LMIA, a Canadian employer must prove that there is no Canadian or permanent resident available who can do the job that you intend to give to the foreign worker thereby justifying the need to hire a foreign worker. A positive LMIA is provided to the foreign worker to submit with his application for a work permit, which is most times issued for one year if granted. A negative LMIA will imply foreign workers skill not needed. LMIAs are issued by Employment and Social Development Canada (ESDC) at a cost of $1,000 for each temporary foreign worker position applied for.