Pair the letter with the offer or services agreement, relevant credential evidence and proof of Canadian or Mexican citizenship. Explain any distinction between the contract duration and the temporary period requested. Duties and remuneration should accurately reflect the arrangement across the documents; do not force them to state a fictional matching end date.
Keep the package internally consistent
Read the letter, the contract, and any recruiter correspondence side by side and mark every difference in title, duration, duties, or compensation. Where the documents disagree, decide which reflects the actual arrangement and have the employer correct the other before anything is submitted or presented. Credential documents should support the exact requirements of the listed profession, including any experience alternative the listing allows.
Dated letters from each previous employer stating the position, duties and period, on letterhead and signed by someone who can confirm them, together with the diploma and transcript. The state licence and the degree or provincial licence establish the credential; if the licence has been renewed since the first entry, the current certificate goes in the file. Create an activity chart identifying each Canadian and U.S. engagement, its payer, client, worksite, contract, and supporting original. Add a credential evaluation when appropriate, relevant licensing material, and a short explanation of why certain project identifiers are withheld.