Qualifying prearranged professional work may be full-time or part-time. The actual profession, credentials and temporary arrangement still need assessment.
Use the genuine hours
Do not inflate the schedule or invent work to make the letter look stronger.
If the diploma is in an unrelated subject, the entry is not met by adding more years, and the honest step is to look at whether another listed profession fits the actual work or whether a different category suits the household better. Before departure, the applicant should establish Canadian or Mexican citizenship, a prearranged position in a listed USMCA profession, and the precise qualification that profession demands; Canadian permanent resident status is different. The route is restricted to citizens of Canada or Mexico who have prearranged professional employment, meet the particular qualification for a USMCA-listed occupation, and will not be self-employed in the United States. Recheck the classification rather than assuming only the numbers changed: TN requires a Canadian or Mexican citizen performing prearranged work in a listed USMCA profession, with that profession’s own qualifications and no self-employment. The practical discipline is an annual review: read the original letter, compare it with the present job description, check the licence status, and correct any drift while it is still small.