A material change in duties, client placement or employer should be reassessed, since it may affect the basis for the original proposal. L-1B status is generally limited to a maximum of five years. Provide the revised facts rather than assuming the original review still covers the new arrangement.
Keep the original and revised plans both on record
Note what changed and when, and identify whether the claimed knowledge is still relevant to the new duties. Confirm actual approval and status dates before the employee begins any different assignment, rather than treating a client's delivery deadline as authorization on its own.
Start with the assignment’s real launch date and work backward through evidence collection, internal technical review, petition preparation, and travel planning. Reassess if the technology, entity relationship, or assignment purpose changes. Hypothetical example: an optical-coating process worker is scheduled to train a U.S. team after a production line opens, but the foreign company has not finalized which process will be deployed. The company should document the final transfer need before setting an immigration deadline. The one continuous qualifying foreign year must be found in the three years before filing, and L-1B time has a five-year cap.
Preserve the internal change record so the updated assignment can be described accurately.