Describe what was learned at each assignment
Hypothetical example: an employee attended short training visits at several affiliates and later became responsible for a deployment method. Identify which visits introduced the method, where the person applied it and what advanced knowledge was developed. Attendance alone does not establish the level of expertise. Use primary records created during the transaction or employment relationship wherever possible. A later letter should identify what its author actually knows and should not convert an intention into an established fact.
Distinguish employment history from travel history
Identify the actual employing entities, dates and duties, including one continuous year of qualifying employment abroad in the relevant three-year period. Have interruptions, U.S. travel and entity changes assessed for the individual. Do not add scattered travel days into a qualifying year or assume every trip breaks it. Put the evidence in chronological order and identify the person or organization that can verify each material point. This exposes missing authority, a conflicting date, or an assumption that needs correction before filing.
Explain the proposed U.S. application
Show how the U.S. organization will use the knowledge and establish the qualifying company relationship. Avoid a generic indispensability claim: describe the work and evidence of the applicant’s capability. The L-1B case does not become managerial merely because the employee teaches colleagues or has substantial seniority. Choose the next step only after the operating facts and documentary record agree. A persuasive label, urgent commercial deadline, or larger budget cannot replace the statutory or regulatory requirements.
Sources reviewed 2026-09-07. This guide covers a preparation focus; it is not an individual eligibility assessment.