The work cannot begin merely because the employer chose that date. Assess whether the available evidence supports the appropriate request and what remains necessary before lawful employment can start. A delayed document may require revising the schedule; do not replace it with an inaccurate statement.
Identify an evidence-based next step
Ask the issuing institution about the actual status and any reliable interim confirmation. Review that evidence under the applicable procedure rather than assuming any email is sufficient. Keep the employer informed about the unresolved requirement without promising an agency outcome or a start date the applicant is not authorized to meet.
The two long items usually sit outside the employer's control: a provincial regulator or registrar issuing a letter of standing, and a credential evaluation for a degree earned outside Canada or the United States. Once a turnaround date is confirmed with the U.S. facility, the support letter, credential evidence and duty description should be finalized well before travel, so the officer reviewing the case at entry has a complete file rather than a promise that documents will follow. Admission is granted for a period not exceeding three years and is tied to the employment described, so applying against a schedule that is still moving produces either a refusal or an authorization that no longer matches the work.