IN THIS GUIDE · Reviewing current location and status when a U.S. offer arrives mid-trip, before treating a visitor admission as a work start
Start with the TN eligibility and application overview
Confirm the current admission record before anything else
Check the most recent admission class and authorized stay using the available record, passport and travel history. Do not assume that every Canadian visitor has an electronic I-94. If the record is absent or unclear, have counsel identify the actual admission terms before assessing an in-country change of status or departure. The family trip itself does not authorize taking the new job. The useful result is a dated account of the last entry, any prior status requests, and the activity proposed before departure or a new admission. That record tells counsel whether a change request is even a viable question; it also prevents a plan from assuming a visitor record grants work rights that it does not grant.
Separate the routes into TN, and what each one produces
Canadian citizens are generally visa exempt and may seek TN admission at a port of entry with the required evidence. A U.S. employer may instead file a petition with USCIS, including a request to change status for someone already in the country. Mexican citizens generally need a visa. These paths differ, and approval of a petition is not the same as admission or as work authorization taking effect. Choose the process before promising travel or payroll dates. A Canadian applicant can request a TN decision from CBP when seeking admission with supporting evidence, while an employer can submit Form I-129 to USCIS when the petition route fits the facts. Neither route eliminates inspection, and neither authorizes work before the applicable authorization takes effect.
Test the offer against a listed profession
An offer made quickly during a trip is often short on detail. TN requires citizenship of Canada or Mexico, a qualifying listed profession, the credential alternatives set out for that specific profession, prearranged professional employment, and temporary entry. Ask the employer to put the duties, title, term, and work location in writing, then compare that description against the exact profession listing rather than the job title used internally. A first comparison should identify the profession entry, the qualifying credential option, and the evidence that connects each material duty to professional work. If a core duty is sales, supervision, or general operations rather than the identified profession, the employer must decide whether to revise the actual assignment or investigate another route. A polished letter cannot cure a mismatch in the work itself.
Hold the start date, including informal onboarding
Do not start performing the new professional job on the strength of the visitor admission or a pending filing. Training, orientation and unpaid tasks require review of the actual activity and admission class; their labels do not create work permission. Ask counsel what may be done during this visit and when the proposed TN employment can lawfully begin. Put the decision in a short timeline: last day of visitor activity, document-completion date, request or petition date, anticipated travel, and first workday. The employer should also identify which pre-start items are genuinely administrative and which ask the individual to provide productive services. Calling productive work voluntary, introductory, or remote does not settle the authorization question.
Sources reviewed 2026-09-07. This guide covers a preparation focus; it is not an individual eligibility assessment.