IN THIS GUIDE · Distinguish employer knowledge from a general provider assignment
Start with the L-1B eligibility and application overview
Describe the employee’s actual knowledge
Hypothetical example: a company uses a general support vendor but needs a transferee for its own deployment process. Explain special knowledge of the organization’s products, services or interests and their international application, or advanced knowledge of its processes and procedures. Identify the relevant work instead of relying on a specialist title.
Use accurate comparisons without creating new requirements
Explain the employee’s experience and knowledge with genuine examples. L-1B does not universally require unique, secret or proprietary information or a general U.S. recruitment test. Do not turn a provider comparison into an unsupported assertion that no other worker could ever perform the task.
Assess unaffiliated-site work under both restrictions
For work primarily at an unaffiliated employer’s site, the bars are being controlled and supervised principally by that employer, or an arrangement essentially providing labor for hire rather than a product or service requiring knowledge specific to the petitioning employer. Identify the actual supervision, control and petitioner-specific knowledge connection. A vendor comparison does not establish who actually directs the transferred employee.
Establish the qualifying company transfer
Prove qualifying organizations, doing business and generally one continuous qualifying foreign employment year within the relevant preceding three years. Where the U.S. operation is a new office, assess sufficient premises and financial ability to pay the employee and begin doing business. An outside provider relationship does not create qualifying corporate affiliation or employment history.
Keep vendor history out of the employee’s qualifying year
Attach payroll, duty and travel evidence to the employee, not to the outside provider’s contract anniversary. The relevant preceding three-year period must generally contain a continuous full-time qualifying foreign year; U.S. visit days are deducted even where brief visits do not break continuity. Foreign managerial, executive or specialized-knowledge work may qualify, while the U.S. position must satisfy L-1B; new-office L-1A specifically needs foreign managerial or executive employment. Use customer deliveries and service records to show the qualifying organization’s regular, systematic, continuous business in the United States and another country. Registration and a vendor directory do not establish those operations. For U.S. doing business under one year, identify sufficient premises, money to pay the employee and capacity to commence business. Initial new-office approval cannot exceed one year, even if a provider offers a longer support contract.
Explain the specific knowledge and assignment
Where an L-1B employee is placed at a site not controlled by the petitioner, the placement must not be essentially labour for hire, and the petitioner must retain control over the employee's work, including day-to-day direction and the discretion over the work performed. Training records, internal documentation the beneficiary wrote or maintains, and project histories showing how the knowledge was acquired and applied can help. Explain how the knowledge was gained, how it is used abroad, what the U.S. assignment requires, and why ordinary onboarding would not provide an equivalent worker with the same capability. An initial L-1B review should turn claimed expertise into specific, verifiable knowledge: the product feature, internal process, training source, users of the knowledge and why the US assignment needs it. Ask for concrete examples: a restricted procedure, an unusual system dependency, or a problem the employee resolved by using internal methods. Dated training materials, controlled-procedure revisions, project assignments, escalation logs, and organizational charts can establish different points. The classification concerns knowledge of the organisation's own products, services, and techniques, or an advanced level of knowledge of its processes, and length of service alone establishes neither.
Sources reviewed 2026-09-07. This guide covers a preparation focus; it is not an individual eligibility assessment.