It depends on the actual professional work in both phases. Review the rotation against the selected profession, rather than assuming the research phase qualifies the entire appointment. The applicant must also meet citizenship, credential and temporary entry requirements independently of the employer’s rotation policy.
Assess the sequence as offered
A planned support period is part of the offered arrangement, even when it occurs later. Provide its description during the initial review. If the employer has not defined the work yet, identify that uncertainty and agree how it will be resolved before assigning the activities.
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. Obtain a transcript or institutional letter stating whether the credential was formally conferred, the award date and the field of study, then compare those facts with the precise qualification rule for the proposed profession. The supporting package must still establish Canadian or Mexican citizenship, a prearranged position within a listed USMCA profession, and the exact qualification required for that occupation; money cannot cure a category mismatch. A spouse who wants an income has to qualify independently: a college instructor spouse could hold a second TN with a second offer letter, and other listed professions such as accountant, registered nurse or physiotherapist each carry their own credential rule.