Treat the proposed start date as one fact, not as authority to begin work. The appropriate process and timing depend on the specific facts and the authorization obtained.
Make a calendar with decision points
Set dates for receiving the employer letter, credential review, licence confirmation, family document checks, and the intended immigration procedure. Hypothetical example: A consultant receives a start date in four weeks but the final duty description is still changing. It is safer to resolve the role description before arranging travel than to rely on a generic letter at inspection.
Build slack for documents held by universities, licensing bodies, or prior employers. If the plan changes after a request is prepared, compare the new duties, worksite, entity, and period with what was presented. Do not continue or commence services merely because a contract has been signed; work permission follows the actual immigration status and terms.
After admission, retain the I-94 details and compare them with the employer’s plan. A future extension or change should be analysed early enough that the household has meaningful options. Place factual deadlines, government process dates, and commercial milestones on separate lines.
Recheck the plan whenever the employer, enterprise, family composition, or proposed activity changes. A request can require more evidence than expected, so leave time to respond without misrepresenting the present facts. Permission must be established before the relevant activity begins; optimism about a future result is not permission.
For this tn review, keep that conclusion tied to the documents actually available. Confirm the current procedure before relying on an earlier file or informal description.