Start with the TN eligibility and application overview
Separate the employer’s test from the listed profession’s standard
TN is temporary professional activity in a listed USMCA profession for Canadian or Mexican citizens, not Canadian permanent residents solely by residence. The applicant needs the profession’s actual qualifications; experience is not a universal substitute for education. An employer’s willingness to test the person later does not waive a required credential or establish that the proposed initial tasks fit the category. The first decision is whether the stated occupation and day-to-day duties match a specific listed profession before assembling supporting material. A polished job title cannot repair a mismatch between the letter and the work. Where the employer has a training or probation period, describe supervision, productivity and the point at which the employee performs the professional duties independently.
Explain the actual engagement during each stage
Identify duties, pay, employer and duration, including any conditional terms. Degrees from outside Canada, Mexico or the US need reliable foreign-credential evaluation, while US practice licensing is distinct. Services to a US entity solely owned or controlled by the applicant are prohibited TN self-employment; foreign ownership alone is not a blanket exclusion. Canadians generally may seek visa-exempt TN admission and Mexicans generally need a visa, with applicable petition options considered separately. For a Canadian applicant, TN classification is commonly requested from CBP at inspection or preclearance. When the petition route is appropriate, the US employer can submit Form I-129 to USCIS instead. The category cannot be used for an engagement the applicant will effectively operate as their own US business. The governing contract, payroll records and supervision arrangement are more useful than a generic assurance about independence. Before travel, compare every document to the final offer and resolve a changed supervisor, client, worksite or duty allocation in writing. The decision-maker needs a coherent present-tense account, not a collection of documents describing several possible jobs.
Ownership, self-employment and the state licence are separate checks
An offer that pairs laboratory or research responsibilities with revenue quotas raises a question that has to be answered before any profession is selected: what the position is actually for. Any licence needed to practise in the United States is a separate issue from the listed TN qualification. Read the appendix entry for the profession being claimed and note precisely what it accepts: some entries require a specific degree, others admit stated alternatives, and experience substitutes only where that entry says so. A diploma, transcript, licence, or employer letter in another language is the candidate for translation. The technician entry involves theoretical knowledge in a named discipline, practical problem-solving or application to research, and direct support of professionals in that field. Each listed profession carries its own minimum, and those minimums differ: some accept a baccalaureate, some require a provincial or state licence, and a few recognise experience in place of a degree. Confirm as well that the letter describes the profession by the qualification actually relied on, since the profession-specific requirement is assessed against the person’s credentials rather than against the job title the company happens to use internally.
Sources reviewed 2026-09-07. This guide covers a preparation focus; it is not an individual eligibility assessment.