Identify what each party can reliably confirm and what documents the arrangement already provides. Do not obtain a signature on facts the writer does not know.
Use the relevant records for each responsibility
The employer can confirm its employment terms; the customer scope may explain the assignment and site duties. Provide contracts or other reliable evidence and flag any unresolved point. Ask what the selected process requires rather than assuming one particular signature is universally mandatory or that an unsigned customer account is sufficient in every case.
Hypothetical example: A wildlife biologist will work for a staffing company at a conservation-data vendor, and the two agreements describe different project dates. A first document review identifies which record proves employment terms, which proves the worksite scope, and which explains the applicant's professional activities. Keep dated versions of the offer, customer statement of work, degree record, and identity evidence together with a short discrepancy log. Do not silently select the more favourable date. Ask the employer to explain any change in assignment, supervision, compensation, or duration using facts it can verify. A customer may confirm tasks without becoming the legal employer. The practical sequence is to settle the actual arrangement first, then prepare the evidence for the chosen TN process. A package fails more easily when a writer copies an old scope or an unsigned draft is treated as the final arrangement.
Use a dated index that marks the controlling version of each agreement. That simple control step prevents an earlier draft from silently setting the duties or duration presented to the reviewing officer.