In most cases, the employer must send you:
the job offer and a Labour Market Impact Assessment (LMIA) number; or
the offer of employment number.
Once you have one of these numbers, you can apply to get, extend or modify a work permit.
If the employer is LMIA-exempt, find out how to get a work permit for these jobs.
If you apply for an open work permit, you don’t need to provide any documents from an employer.