IN THIS GUIDE · A first L-1B assessment that tests the corporate relationship, the year abroad, the knowledge itself, and the proposed duties as one connected question
Start with the two entities, not the employee
Before discussing any individual, establish how the sending and receiving organisations are related and whether the group is doing business as an organisation in more than one country. L classification depends on a qualifying parent, branch, subsidiary or affiliate relationship, so ownership charts, incorporation records and intercompany agreements are foundation documents rather than supporting ones. If the relationship runs through holding companies, a joint venture or a recent reorganisation, flag it early for counsel instead of compressing it into a sentence. Ask for the ownership position as it stands today rather than as it stood when the transfer was first discussed, and obtain the instrument behind any recent change alongside the registry extract. Where a joint venture or an investor with a blocking right sits in the chain, that structure should be described to counsel in full rather than summarised, since control and ownership can point in different directions.
Reconstruct the qualifying year from records
Next, look at the employment history abroad. The general expectation is one continuous year of qualifying employment with the organisation within the relevant preceding three-year period, and the exact counting is case-specific. Pull payroll registers, employment contracts and any secondment letters rather than relying on a curriculum vitae. Note interruptions, unpaid leave, internal transfers between group entities, and any time already spent working in the United States, because each of those can change how the year is calculated. Ask specifically whether any part of the qualifying period was spent working in the United States, because that is the detail most often omitted from a chronology assembled by the employee. Short assignments, secondments and remote work from a United States location are all facts the analysis needs, and none of them appear on a curriculum vitae written for recruiters.
Describe the knowledge in working terms
Only then discuss the knowledge itself. L-1B rests on special knowledge of the company's product, service, research, equipment, techniques, management or their application in international markets, or an advanced level of knowledge of the organisation's processes and procedures. It does not require that the knowledge be unique or proprietary, and ordinary industry experience is not enough. Ask the employee's manager to describe the specific systems, methods or customer implementations the person handles and how that capability was built inside the group. Ask the manager for two or three specific instances rather than a general description, since concrete examples are what make an advanced knowledge claim assessable. A particular customer deployment, a method the person devised, or a problem only they have solved inside the group all describe knowledge in a way that a list of technologies does not. Note also that L-1B permits a maximum period of stay of five years, against seven for L-1A.
Tie the knowledge to the proposed assignment
Finish by comparing that description with the work planned in the United States: the tasks, the team, the worksite, and why this employee rather than a new hire. Where the assignment would place the employee at a client site, say so, because offsite placement carries specific supervision and labour-for-hire restrictions that need a proper legal assessment. Close the conversation with a short list of the weakest elements and who inside the company owns the evidence for each. Where offsite placement is contemplated, obtain the client agreement and the supervision arrangements in writing before the assessment rather than describing the intention, since the restrictions in this area turn on who directs and controls the work and on whether the placement amounts to labour for hire. That is a legal assessment, and it is considerably easier to make from documents than from a plan that has not yet been reduced to writing.
Sources reviewed 2026-09-07. This guide covers a preparation focus; it is not an individual eligibility assessment.