Use records that identify the employer’s terms and the client-side scope without asking either party to attest to facts it cannot know.
Give each party its own factual role
A client-site assignment should be analysed from the actual proposal, not from an abbreviated label in an email or a planning spreadsheet. The record should show prearranged professional services and the relationship among the worker, employer, and receiving organization; it must not disguise prohibited self-employment. Start with the facts that exist today: names of parties, dates, duties, ownership rights, payments, and any condition that could change the arrangement.
A future intention can be useful context, but it should not be presented as an accomplished fact. Retain the offer, statement of work, invoices or contract excerpts, organizational contacts, and a precise timetable. Keep originals available and make translations complete where the chosen process calls for them.
If a document is unavailable, explain the gap accurately rather than filling it with an assumption. Dependents need their own identity and relationship documents even when the principal’s employment file is complete. That person’s nationality, status record, age, planned study, and planned activity may require a separate review.
Government fees, filing locations, visa availability, and procedural instructions can change, so confirm them from the current official source before money is committed or travel is booked. Reconcile conflicts between the offer, scope, payroll description, and daily duties before a request is made. The purpose of preparation is a clear factual record and an informed route comparison; it is not a promise that an officer will reach a particular result.