Connect relevant roles and work to the knowledge claimed, while accurately establishing the qualifying employment period.
Separate chronology and capability
A service anniversary proves neither every specialized skill nor the proposed US duties. Use concrete, truthful evidence of the person’s actual contribution rather than a tenure-only assertion.
Use whatever contemporaneous evidence exists — internal notes, project files, correspondence, or third-party records — to document how the knowledge was developed and applied. The company's own written procedure with a dated revision history showing internal development and identifying the analyst as a contributor or trainer can be powerful evidence. Identify authentic records and a permitted explanation of the relevant process and individual contribution, with appropriate handling agreed for sensitive material. Give enough detail to establish the claimed knowledge while protecting genuinely confidential material through careful summaries and controlled exhibits. Do not submit sensitive information carelessly; explain confidential systems at an appropriate level while still making the knowledge intelligible. A truthful account can distinguish different levels of knowledge; a claim that nobody else knows the system should not contradict the company’s own records. L-1B concerns special knowledge of the organization’s product and its application, or advanced knowledge of its processes or procedures, rather than travel frequency or generic expertise. Customer names, personal data, and unrelated commercial terms may often be removed, but dates, technical context, authorship, and the applicant’s contribution must remain intelligible.