As an employer, you may need to apply for a Labour Market Impact Assessment (LMIA) before you can hire a foreign worker or get pre-approval to hire a large number of workers.
A positive LMIA will show that there is a need for the foreign worker to fill the job you offer and that there is no Canadian worker available to do the job.
You can find more information about LMIAs and application forms on the Temporary Foreign Worker Program website.