Review the actual changed activity and permission first.
Do not equate an HR date with authorization
A promotion letter is not a government decision. Identify the real duties and applicable process before relying on the effective date.
Begin the licensure file as soon as the destination state is settled, because verification from an institution or a home-jurisdiction regulator involves third parties. Counsel can map out realistic milestones, when a TN renewal is due, when a longer-term filing might realistically begin, so the two don't collide in a way that complicates either one. The first review should identify the latest safe date for a final duty description, credential evidence, employer letter, and any application step. Starting both as early as the bodies permit, and running them in parallel rather than in sequence, is the single most effective thing a nurse can do about the timeline. TN preparation and government decisions are separate steps, and an expected date is not authorization to work. An institution’s invitation or a filed request is not a universal substitute for effective authorization. Work may begin only once TN status is effective or TN admission has been granted, depending on the route.