IN THIS GUIDE · Review a proposed next employment period rather than assuming automatic continuation
Start with the TN eligibility and application overview
Describe the new period accurately
Hypothetical example: an employer extends a project but changes the professional’s responsibilities. Identify actual duties, remuneration and anticipated period. The current and proposed assignments should remain distinguishable even when the employer is the same.
Preserve the professional and citizenship requirements
TN principals need Canadian or Mexican citizenship and the prescribed qualifications for a listed professional activity. Reassess changed duties against the actual listing rather than assuming the earlier title settles every later role.
Review the evidence that remains relevant
Credentials may remain unchanged while offer terms or employment arrangements differ. Degrees from institutions outside Canada, Mexico and the United States require reliable evaluation; translation is distinct. Do not recreate unchanged history or ignore new facts.
Assess actual authorization and ownership
A project continuation does not itself extend status or authorize different work. Identify relevant employer and applicant ownership, including the prohibited arrangement of services to a U.S. entity solely owned or controlled by the applicant; foreign ownership alone is not a blanket exclusion.
Apply the temporary-work and credential boundaries
TN concerns qualifying temporary professional activity for Canadian or Mexican citizens. Providing services to a U.S. entity solely owned or controlled by the applicant falls outside the permitted arrangement; a foreign business interest alone is not a blanket disqualification. Degrees from institutions outside Canada, Mexico and the United States require a reliable foreign-credential evaluation. Any licence needed to practise the profession in the United States is a separate question from the listed TN qualification.
The employer letter must describe professional practice
The management-consultant listing permits a baccalaureate or licenciatura degree, or documented equivalent professional experience of five years as a management consultant or in a specialty related to the consulting agreement. The employer's letter must describe the position as an Engineer role with engineering duties — design, analysis, specification, inspection — and state the salary, the duration and the temporary nature of the stay. Land surveying appears among the USMCA professional categories, and that category carries its own credential requirement, which may be satisfied by a qualifying degree or by the appropriate licence. Experience cannot universally replace education, and a reference letter should not claim duties or credentials the person did not actually have. A diploma means at least two years of post-secondary education at an accredited Canadian or U.S. institution; the certificate alternative has specified Mexican government or recognized-institution issuance requirements and at least two years of study. A Canadian citizen applies at a land border, a preclearance post or an airport port of entry with the passport and the supporting file, or the employer may file Form I-129 in advance. A Canadian commonly seeks admission through preclearance or at the border; in suitable circumstances an employer can submit an I-129 petition to USCIS. A first-pass credential review identifies the exact degree or designation, issuing institution, and any missing comparison document.
Sources reviewed 2026-09-07. This guide covers a preparation focus; it is not an individual eligibility assessment.