Which records should we keep for an L-1B extension?

Keep current payroll, work examples, assignment changes and business records, plus all approval notices, I-94s and travel history. The objective is a verifiable account of continuing eligibility and the time available.

Document change as it happens

Save updated contracts and supervision information when clients or locations change. For a new-office extension, maintain evidence of actual operations and financial circumstances rather than only the original business plan. Build a clear comparison with the earlier petition so changed facts can be assessed.

Preserve dependent status documents separately because their dates and procedural needs may differ. Draw a boundary around what the evidence file is for. It exists to show continuing eligibility and the period available, not to serve as a general company archive, and padding it with material that answers no question makes the relevant documents harder to find.

Hypothetical example: a site-safety training provider assembles hundreds of course completion certificates for an extension, none of which show what the transferee personally does or why that work involves specialised knowledge. Select instead a small number of work products with dates, the transferee’s name on them and a short note explaining what each demonstrates. Keep status records — approvals, admission records, travel history — in a separate section, because they answer the time question rather than the knowledge question and the two should not be argued together.