Usually the employer's time to draft an accurate letter and counsel's time to review it against the profession's listing. If the corrected duties turn out not to fit the profession claimed, the cost shifts to reassessing the route, which is a larger piece of work.
Budget for both drafting and profession review
A letter revised before submission costs a drafting cycle. A description challenged after the fact can mean a delayed start, a further round of employer correspondence, or a reassessment of whether the role fits the profession at all. Bringing the posting and the offer to counsel together, at the beginning, keeps the review narrow.
Presenting an application at a port of entry as a Canadian citizen and having an employer file a petition are two different transactions with different charges, and the employer usually decides which one happens. Provide the complete proposed agreement and ask counsel whether the quote covers structure analysis, ownership review and any subsequent filing. Set out the ongoing Canadian costs alongside the US housing the assignment requires, and ask the employer what relocation or housing support is offered and on what conditions. The employer may reimburse, but the applicant is usually the one who must pay the licensing bodies directly.