IN THIS GUIDE · Explain technical terminology without overstating specialized knowledge
Start with the L-1B eligibility and application overview
Use a real technical example
Hypothetical example: internal manuals use terms unfamiliar to an English-speaking reader. Explain the process and what the employee actually knows. L-1B concerns special knowledge of the organization’s products, services or interests and international application, or advanced knowledge of its processes and procedures.
Keep explanations accurate and attributable
A glossary may help explain terminology without replacing required source evidence. Do not turn ordinary vocabulary into assertions that the knowledge is universally unique or secret. L-1B does not require a general U.S. recruitment test, and terminology alone does not establish qualifying knowledge.
Preserve the actual transfer evidence
Establish qualifying organizations, doing business and generally one continuous qualifying foreign employment year within the relevant preceding three years. Training and employment records should accurately identify the applicant and events. A new office also needs sufficient premises and financial ability to pay the employee and begin doing business.
Describe customer-site control plainly
For work primarily at an unaffiliated employer’s site, the bars are being controlled and supervised principally by that employer, or an arrangement essentially providing labor for hire rather than a product or service requiring knowledge specific to the petitioning employer. Assess the actual control, supervision and petitioner-specific knowledge connection. A translated contractual label does not settle the real supervision or purpose.
Translate dates and business activity without changing their meaning
Prepare an employment chronology from the actual payroll and travel records before translating its headings. Generally the relevant preceding three years must contain one continuous full-time qualifying foreign year. Keep U.S. days outside that count; a brief visit need not interrupt continuity. Describe foreign managerial, executive or specialized-knowledge work accurately, without translating it into whichever capacity sounds preferable. The U.S. assignment must meet L-1B; new-office L-1A specifically requires a managerial or executive foreign year. Distinguish incorporation records from regular, systematic, continuous goods or services in the United States and another country. If actual U.S. doing business is less than a year, explain sufficient premises and financial ability to pay the specialist and start business. Preserve the initial new-office limit of at most one year instead of translating a commercial planning period as immigration validity.
Sort general skill from company-specific knowledge
If the subsidiary needs someone to commission the proprietary control system on machines it is installing, say so and identify the projects. Specialized knowledge need not be unique or proprietary, so the existence of three trained colleagues would not by itself defeat the case. If any experienced greenhouse manager could apply the same methods after a short orientation, the knowledge is general. If the specialist will work at a client site, the petitioner must retain principal control and the placement cannot be labour-for-hire. Write the knowledge down as a list of things a competent outside electrician would not know and could not learn quickly, then show how the applicant learned them. A first review should ask which record proves the employee learned and applied the company-specific method, not merely attended a course. The useful deliverable is a compact evidence matrix stating what the applicant knows, how it was learned, where it was used, and why the U.S. role calls for it. Past familiarity should not be portrayed as complete knowledge of processes introduced while the person worked elsewhere.
Sources reviewed 2026-09-07. This guide covers a preparation focus; it is not an individual eligibility assessment.