IN THIS GUIDE · Check whether a delayed start also changes the professional offer
Compare the old and current duties
Hypothetical example: the employer postpones the start and assigns the applicant to a different project. Identify changes in professional, operational or customer responsibilities. Do not use the earlier duty description merely because it fits the profession originally considered. Ask the employer to identify the project deliverable, the people receiving the work, and who assigns daily priorities. A revised letter should not simply repeat a job title. Comparing the old and new duty lists line by line can show whether the change is a scheduling adjustment or a different professional engagement requiring a new assessment.
Recheck the exact profession and qualifications
Assess the current role against the listed TN profession and its precise credential requirements, including permitted alternatives. Canadian permanent residence is not qualifying TN citizenship. A prior favourable impression does not establish that materially different work fits the same category. Match each required credential to a primary record before making travel plans. Degree transcripts, licences where the occupation requires them, and experience records may answer different questions. If a qualification is an alternative rather than the usual degree, document the exact alternative rather than relying on a broad description of related experience.
Confirm the employment arrangement
Identify the actual employer, duration, customer or intermediary roles and relevant ownership interests. Foreign ownership alone is not a blanket disqualification, while TN does not authorize general U.S. self-employment. A revised project label does not resolve the substantive arrangement. Clarify who has the power to hire, direct, evaluate, and end the engagement. That record is especially important when a customer, agency, and U.S. employer all appear in the arrangement. A commercial contract can be useful evidence, yet it does not by itself resolve whether the professional will be working for an independent qualifying employer.
Use current permission for interim activity
A postponed offer does not automatically authorize other U.S. work while waiting. Describe any interim activity and have material changes assessed through the appropriate process. A new desired date is a planning fact, not a government decision. Create an activity calendar for the gap between the old and new start dates. Mark activities that occur in Canada separately from any activity physically performed in the United States. Preparation, meetings, services, and paid work can require different analysis; a projected future assignment does not turn every helpful business task into permitted present activity.
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. Canadian citizens may request TN status at a port of entry, or a U.S. employer may file Form I-129 with USCIS; Canadian TN applicants generally do not require a visa stamp. TD dependants may study but may not work. Keep a short change log with the date, document, person who confirmed the fact, and practical consequence. That log helps the applicant decide whether to refresh the support letter, credential packet, or process choice. It also prevents an explanation written after the fact from becoming the only evidence of why the employment description changed.
Sources reviewed 2026-09-07. This guide covers a preparation focus; it is not an individual eligibility assessment.