IN THIS GUIDE · Ask the U.S. consulting firm the right questions before a Crown-utility engineer resigns
Start with the TN eligibility and application overview
The rule she is being measured against
TN is open to Canadian and Mexican citizens taking prearranged professional work in an Appendix 2 profession. For Engineer the qualification is a baccalaureate or licenciatura degree, or a state, provincial or federal licence. The work must be for a U.S. employer or entity, not for the applicant's own business; ownership of the U.S. employer must be disclosed and self-employment is not permitted. Canadians apply at a port of entry with the employer's letter, or the employer may file Form I-129 with USCIS. Admission is granted for up to three years and may be renewed. Dependants receive TD status, may study, and may not work.
Employee or placed contractor: the first question for the firm
Consultancies staff projects in more than one way. If she will be on the firm's payroll doing engineering for the firm's clients, the firm is the employer and writes the letter. If the firm intends to place her with a municipal utility as a contractor paid through the firm, the letter must describe the arrangement accurately: who directs the work, where it is performed and for how long. TN can accommodate a Canadian professional providing services to a U.S. entity through a Canadian employer, but not a person who is effectively self-employed through a personal corporation. Get the intended structure in writing before the letter is drafted.
Duties that read as engineering
The letter must describe professional engineering work: design, analysis, specification, review of drawings, stamping where licensed. A consultancy that wants her primarily to manage schedules, budgets and client relationships is describing a project-management role, and an officer may decide that role is not the engineering profession she is qualified in. Some project management is normal within an engineering position; the balance is what matters. Ask for the actual job description, compare it with the utility work she has done, and have the letter written from the real duties rather than from the firm's standard template.
Renewals, intent and the sponsorship conversation
TN has no fixed maximum number of renewals, but each admission requires that the stay be temporary and that she intend to leave when it ends. A firm that says it will sponsor her for permanent residence after a year is describing a plan that, once a labour certification or immigrant petition is filed, can complicate renewals and re-entries. That is not a reason to refuse the offer; it is a reason to sequence honestly. Discuss the long-term plan in the consultation, keep the initial application focused on the temporary engagement, and revisit the immigrant question with the firm once she is working.
Sources reviewed 2026-09-07. This guide covers a preparation focus; it is not an individual eligibility assessment.