Ask the employer for a signed letter setting out the profession, duties, term, and location, and locate your citizenship document. Note which credential records, diplomas, transcripts, licences, or experience letters, are at home in Canada and would need to be retrieved.
Split what travels with you from what waits at home
Inventory the records you have, those someone can securely send, and those only an institution can issue. Translation conveys the source language; credential evaluation assesses an educational qualification. Degrees from institutions outside Canada, Mexico and the United States require a reliable foreign-credential evaluation under the TN regulation. Separately confirm translation requirements for the actual filing or admission procedure.
The employer’s letter is separate evidence and does not substitute for any of these. The résumé should use the same job titles and dates as the letter, because the officer may compare them. Confirm whether the specific profession requires a licence to practise, because that requirement can exist independently of the minimum credential used for the immigration determination. Request licence verification early, since a licensing body's records check involves its own timeline apart from any travel plan. Keep a copy of the licence itself, not only a mention in the employer's letter, since an examining officer may want to see the primary document rather than a secondary reference to it. Where a credential supports a specific licence rather than the general profession category, note that connection clearly so the pieces are not left to be inferred from separate paperwork.