IN THIS GUIDE · A qualifying year broken by a secondment to a third country
Start with the L-1B eligibility and application overview
Count the year against the three-year window first
The requirement is one continuous year of qualifying employment with the related organization outside the United States within the three years preceding the petition. The foreign and U.S. entities must have a qualifying parent, branch, subsidiary or affiliate relationship, and both must be actively doing business. Farrah's secondment may or may not count depending on who legally employed her during it and whether that entity is part of the same qualifying group. The first task is therefore not to argue the point but to establish the fact, from employment agreements and payroll records, of which entity paid and employed her in each month of the period. The record should identify what the knowledge concerns, how the employee obtained it, and why a normally qualified worker would not acquire it quickly. Training histories, internal process materials, and concrete examples are more useful than adjectives such as unique or essential.
Time spent inside the United States is treated differently
Brief trips to the United States during the qualifying period do not automatically destroy it, but time spent working in the United States is not time spent abroad, and long or repeated periods can affect both the count and, later, the maximum period available in the classification. Farrah should build a simple travel and assignment log covering three years — dates, country, which entity she was working for — before anyone tries to characterize the year. A log built from passport stamps, calendars and expense claims is far more reliable than a recollection, and it is the document an adviser will ask for first. A client-site assignment needs a separate operational explanation. The filing should identify who supervises the worker, who controls the work product, and how the qualifying organization retains responsibility for the specialized function. Commercial contracts can resolve points that a résumé cannot.
Specialized knowledge means the company's, not the industry's
The specialized-knowledge branch is about knowledge of the petitioning organization's own product, service, research, equipment, techniques, management or procedures, or an advanced level of knowledge of its processes. General expertise in building automation, however deep, is the industry's rather than the employer's. What may distinguish Farrah is the proprietary sequence library her company has developed, the way it is configured for particular equipment, and the internal commissioning methodology she helped write. The petition has to explain what that knowledge is, how she acquired it, and why it is not simply the skill of a well-trained controls technician. Review the foreign-employment calendar day by day when there were secondments, leave periods, or assignments with another group company. The goal is not a broad employment history; it is evidence for the required uninterrupted period with a qualifying organization.
Where she works matters as much as what she knows
If the American subsidiary would place Farrah at client sites, the arrangement has to remain genuinely controlled by the petitioning employer: her work must be for the petitioner's own project, supervised by the petitioner, and not an arrangement that amounts to supplying labour to another company. In a contracting business this needs care, because being on a client's premises is normal and unavoidable. The distinction is between commissioning the employer's own installed system at a client's building and being handed over to the client to work under its direction. That distinction should be described in the petition rather than left to inference. L-1B time is capped at five years in total. The decision package should include a role comparison, a knowledge narrative, and documents connecting the overseas and U.S. organizations. That structure lets the business decide whether the proposed work truly depends on internal expertise before it commits to relocation.
Sources reviewed 2026-09-07. This guide covers a preparation focus; it is not an individual eligibility assessment.