A Labour Market Impact Assessment (LMIA) is a document that an employer in Canada may need to get before hiring a foreign worker. A positive LMIA will show that there is a need for a foreign worker to fill the job. It will also show that no Canadian worker or permanent resident is available to do the job. A positive LMIA is sometimes called a confirmation letter. If the employer needs an LMIA, they must apply for one. Once an employer gets the LMIA, the worker can apply for a work permit. To ... The LMIA (Labour Market Impact Assessment) Confirmation Letter is an official document issued by Employment and Social Development Canada (ESDC) to employers in Canada who have successfully obtained a positive LMIA. Some employers must apply for a Labour Market Impact Assessment (LMIA) if they want to hire a foreign worker in Canada. The purpose of the LMIA is to ensure the arrival of the foreign worker will not hurt workers in Canada. An LMIA work permit is a closed work permit that allows a foreign worker to legally work in Canada for a specific employer after the employer obtains a positive Labour Market Impact Assessment (LMIA). Employers must apply for the LMIA first, and only after approval can the worker apply for a work permit. This permit is employer-specific, meaning: