Explain what the migration requires
Identify the decisions and company processes the migration requires. L-1B covers special knowledge of the organization’s products, services, research, equipment, techniques, management or other interests and their international application, or advanced knowledge or expertise in its processes and procedures. The knowledge need not universally be unique, secret or proprietary. Explain the employee’s genuine relevant expertise rather than relying on an obsolete product name or general migration skills.
Document the relevant experience
Use implementation history, problem-solving responsibilities and reliable training or project records. Explain how the employee acquired and used the knowledge. Access to a system or long tenure does not by itself establish the legal standard.
Describe the project stages
Describe the real duties before, during and after transition. For work principally at an unaffiliated employer’s site, L-1B is unavailable if that employer principally controls and supervises the worker, or if the placement is essentially labor for hire rather than connected with the petitioner’s product or service requiring specialized knowledge. A specialist project description cannot authorize unrelated later duties or cure either offsite limitation.
Establish the qualifying transfer
Show qualifying parent, branch, subsidiary or affiliate entities and regular, systematic and continuous business in the United States and at least one other country during the stay. Generally the employee needs a continuous full-time foreign year in the relevant preceding three years in managerial, executive or specialized-knowledge capacity; U.S. days do not count although brief visits need not break continuity. A new office means less than one year of U.S. doing business and requires premises and financial ability to pay the worker and begin business; initial approval is limited to one year. Migration urgency does not waive these conditions.
Sources reviewed 2026-09-08. This guide covers a preparation focus; it is not an individual eligibility assessment.