You almost certainly can't. A job offer letter is a document that a Canadian employer gives you (as a temporary worker).It explains the details of your job. The nonimmigrant USMCA Professional (TN) visa allows eligible citizens of Canada and Mexico to work in the United States as USMCA professionals. When completing the Offer of Employment in the Employer Portal, the employer should indicate a duration of 2 years for the work permit. A sample letter offering a job contingent upon the results of a background check or other criteria. It may include information on start date, working hours, salary, bonuses, vacation, probation period, and numerous other details. These two HR documents. It's also a good idea to include a brief description of the company's operations, especially if the company isn't well-known. 2. A job offer letter from a Canadian employer is a crucial document for obtaining a work permit and potentially immigrating to Canada.