L-1B requires knowledge that is special to the organization or advanced within it, not simply a capable employee or a niche occupation.
Name the knowledge and its use
Describe the internal product, process, system, methodology, or body of experience with enough detail to show why the individual’s knowledge matters. Hypothetical example: A technician knows a company’s proprietary calibration sequence developed over several releases, while other technicians know the industry equipment generally. The evidence should identify the company-specific sequence, training, projects, and the US tasks that depend on it.
Avoid unsupported labels such as ‘unique’ or ‘critical.’ Explain the duration and manner in which the worker acquired the knowledge, who else possesses it, and why ordinary recruitment would not answer the US assignment’s needs. The inquiry is fact-specific. A sophisticated employee may still fall outside L-1B if the proposed work uses skills readily available in the labour market or does not rely on the claimed organizational knowledge.
Write down the decisive fact in plain language, then identify the document and issuer that can support it. This prevents a broad label from concealing a missing legal element. If the available evidence points in two directions, record both possibilities rather than selecting the convenient one.
The proper next step may be a narrower factual inquiry, not an immediate filing decision. For this l1b review, keep that conclusion tied to the documents actually available. Confirm the current procedure before relying on an earlier file or informal description.