Start with the L-1B eligibility and application overview
Preserve the employment history across the acquisition
Record the legal employer, transaction effective date and roles before and after completion. Establish the qualifying relationship and continuous full-time foreign year within the relevant three years. US days do not contribute to that year, although qualifying brief visits need not interrupt continuity. A buyer’s announcement should not be used to relabel older employment as though the transaction had already closed.
Explain the knowledge that the acquired operation still uses
Connect individual work before the purchase with the actual US assignment now proposed. The standard covers special knowledge of company products or other interests and international application, or advanced knowledge of its processes and procedures; it does not impose universal uniqueness or proprietary secrecy. Identify what remained relevant and what changed instead of assuming either that acquisition erases expertise or that every old capability remains needed.
Reassess the worksite arrangements after the transaction
At a primary worksite of an unaffiliated employer, principal control and supervision by that employer bars the placement. The separate labour-for-hire bar requires work connected with the petitioner’s product or service needing specialized knowledge specific to the petitioner, rather than mere staffing. Identify actual supervision and the receiving entity after closing. Familiar branding does not establish that the legal employer or placement arrangement stayed unchanged.
Date the US operation and identify its real resources
The qualifying group must continue regular, systematic and continuous business in the US and another country. Determine whether US doing business is less than one year. If so, show sufficient premises and financial ability to pay the employee and commence business; initial new-office approval is limited to one year. Acquisition spending is not a substitute for evidence of the resources available to carry out this employee’s assignment.
Explain the actual special or advanced knowledge
Placement at a third-party site is permitted only if the employee is not principally controlled and supervised by that site's operator and the placement is not essentially labour for hire. L-1B exists for a transferee whose knowledge is special to the petitioning organization — its own product, its own process, its own equipment or techniques, or an advanced level of knowledge of how that particular company does things. Describe a task the employee has actually completed: diagnosing an internal process, configuring an organization-specific workflow or training colleagues on a complex method. Look for commissioning and validation reports the employee signed, revision histories on internal procedures they authored, training records showing who was certified on what and when, and project files where they were the person consulted. A specialist installing and commissioning the company's own patented system at customer marinas, directed by the affiliate's own management, using its methods and reporting to its supervisors, fits that requirement. Explain the employee’s understanding of the actual configuration and operating methods, distinguishing ordinary vendor familiarity from the claimed company knowledge. Knowledge need not universally be unique, secret or proprietary, and there is no general U.S. recruitment test. A contract nursery running trials under the affiliate's protocols, reporting to the affiliate's research director, using the affiliate's proprietary system, can satisfy that.
Explain the relevant organizational knowledge
Specialized knowledge does not have to be unique worldwide, and the inquiry is not whether every US worker lacks the skill. Identify the non-public or advanced organizational knowledge, the projects where it was used, the period of learning, and the U.S. tasks that call for it. The file should explain what the beneficiary knows, how it is special or advanced, how it was obtained and why the proposed duties require it; proprietary material can support that explanation without becoming a mandatory element. The most persuasive record lets a reviewer understand the knowledge’s practical value without requiring disclosure of every confidential technical detail.
Sources reviewed 2026-09-07. This guide covers a preparation focus; it is not an individual eligibility assessment.