The commercial deadline is relevant to the intended assignment, but the authorized period and work start depend on the applicable immigration decision and documents.
Connect the project dates to the actual request
Record expected milestones, possible extensions and the intended temporary stay. TN admission is limited to a period not exceeding three years; it is not an automatic three-year grant. Do not assume an equipment-delivery delay extends status. Review changes and the current authorization before continuing work beyond the approved period.
TN is limited to a Canadian or Mexican citizen with prearranged activity that fits a listed professional category and the required credentials. A Canadian may seek inspection-based admission or use an employer’s I-129 filing; the arrangement cannot, in substance, be the applicant’s own U.S. self-employment. The first review should produce a duty-and-evidence chart: each proposed task, who directs it, which listed profession is relied on, and the document that supports the point. Start with the signed offer and any customer scope, then test credentials, payment terms, ownership, and the proposed dates against that chart. A polished letter fails when it leaves a contradictory contract, licence record, or ownership document unanswered. Hypothetical example: A clinical-laboratory technologist has a signed start date but the hospital’s detailed rotation schedule remains unsigned. The employer’s final scope and the appropriate admission or petition sequence should be resolved before the person performs U.S. duties. The practical next step is to preserve the underlying record, identify any conflict in writing, and decide the sequence from the facts rather than from a preferred outcome.