IN THIS GUIDE · Assess the supervision arrangement at each proposed customer site
Start with the L-1B eligibility and application overview
Explain the knowledge used in the assignment
Special knowledge may concern the organization’s products, services, research, equipment, techniques, management or other interests and their international application; alternatively, the employee may have advanced knowledge or expertise in its processes and procedures. The knowledge is not universally required to be secret or unique. Identify genuine experience that makes the knowledge relevant rather than relying on a customer’s general preference for a familiar worker.
Apply the two independent offsite limits
If placement is principally at an unaffiliated employer’s worksite, L-1B is unavailable when that employer principally controls and supervises the worker, or when the placement is essentially labor for hire rather than connected with the petitioner’s product or service requiring specialized knowledge. Hypothetical example: the employer pays the salary but the customer assigns unrelated daily work. Describe that actual arrangement instead of assuming payroll resolves the analysis.
Document the qualifying transfer foundation
Show the actual parent, branch, subsidiary or affiliate relationship and regular, systematic and continuous business in the United States and at least one other country during the relevant stay. The employee generally needs a continuous full-time foreign year within the preceding three-year period in managerial, executive or specialized-knowledge capacity under the ordinary rule. Exclude U.S. days; brief visits need not break continuity. The proposed U.S. work still must satisfy L-1B specialized knowledge.
Keep new-office evidence distinct from the customer contract
An organization doing business in the United States for less than one year is a new office. L-1B then needs sufficient premises and financial ability to pay the employee and begin business; initial approval is limited to one year. A customer contract may explain demand, but cannot establish every office, funding or individual employment condition. Review any change of site or duties against the actual permission.
Explain the actual special or advanced knowledge
The petition should identify a concrete product, service, technique, process or procedure of the organization, such as drying schedules developed for particular species and kiln configurations, a moisture-control protocol, a grading system or specialized software. An employee who has trained colleagues in an internal method should explain their own knowledge without claiming that nobody else can possess it. Do not claim that every externally taught skill is disqualifying or that all knowledge must be unique or proprietary. The work must remain controlled and supervised by the petitioning employer rather than by the site owner, and the arrangement must not amount to providing labour for hire. Product manuals and broad statements that the worker is experienced rarely settle the issue. Identify the internal methods, product history, or cross-border process the employee learned, then show the decisions the U.S. team expects the employee to make with it. The actual special or advanced knowledge standard must be supported without imposing a universal uniqueness or secrecy requirement. Training logs, controlled manuals, project records and supervisor evidence can be more useful than generalized adjectives such as unique or critical.
Sources reviewed 2026-09-08. This guide covers a preparation focus; it is not an individual eligibility assessment.