Revisit it before a material employment or sponsorship change and when official instructions or continuing charges require action.
Act before assumptions become commitments
Give counsel the planned event and dates so the company and employee can understand the process. Do not assume a departure, transfer payment or internal policy change automatically produces a particular immigration result. Maintain an administrative handoff and monitor official correspondence even after the initial preparation team’s work has ended.
Trigger events should be recorded as they occur, with the date and the document that evidences them, because the question later asked is when something changed and how that is known. A resignation letter, an executed transfer, a board resolution or an official notice each fix a point in time in a way that a diary entry does not. Hypothetical example: a digital-signage manufacturing sponsor decides internally to end a sponsorship, communicates it verbally, and months afterwards cannot show when the arrangement actually changed or on whose authority.
Keep the instrument that proves each event, and seek advice before treating the event as having produced a particular immigration result. Nothing in a corporate record determines a government decision; it establishes only what the company did and when it did it. Where an event is discovered rather than planned, note the date of discovery too, since the two are frequently different and the gap between them is itself a fact worth recording.