Start with the L-1B eligibility and application overview
Describe expertise rather than branding
The standard can involve special knowledge of company products or other interests and international application, or advanced knowledge of processes and procedures. It need not be unique or proprietary. Identify the person’s actual capabilities and contribution.
Establish the assignment conditions
Prove the qualifying relationship and continuous qualifying foreign employment year within the relevant three-year period. Describe US duties and supervision. Primary offsite work with an unaffiliated employer raises control and labour-for-hire restrictions. New offices need sufficient premises and financial ability to pay and commence business; initial approval is limited to one year.
Employment days and actual business activity
US days do not count toward the qualifying foreign employment year; a trip does not automatically break continuity. The qualifying organization must provide goods or services regularly, systematically and continuously in the United States and at least one other country. New-office treatment concerns actual US doing business for less than one year, rather than incorporation alone.
Hypothetical example: a field integrator placed at a customer’s marina
Hypothetical example: a Langford company sells a vessel-telematics platform to tour-boat operators and employs a field integrator who configures it on each fleet. A US customer wants that integrator on site for nine months. The specialized-knowledge argument is reasonable: the integrator knows the platform’s configuration logic, its failure modes on different engine systems and the company’s commissioning procedures. What goes wrong is the placement. If the customer’s operations manager assigns daily tasks, sets hours and reviews performance, the arrangement looks like labour for hire, which L-1B does not permit. The petitioner should keep the integrator on its own payroll, assign a supervisor who directs the work, define deliverables in a statement of work between the two companies and describe the on-site period as an implementation of the petitioner’s product. The decisive documents are that statement of work and the supervision description, not the customer’s enthusiasm.
Document control at the customer worksite
Assemble the file in this order: confirm the qualifying relationship between the Canadian and US entities, confirm the one continuous year of employment abroad in the last three years, then write the knowledge description with concrete examples of tasks only this employee or a small group perform. L-1B time is limited to five years, and L-1A to seven, so a long customer implementation consumes part of that allowance. Family members admitted as L-2 dependants should know that L-2 spouses are authorized to work incident to status, while L-2 children are not.
Separate general technical skill from employer knowledge
Work at a third-party location is permitted only if the transferee is not principally controlled and supervised by the unaffiliated employer and the work is not essentially labour for hire. If the principal worksite belongs to an unaffiliated employer, L-1B is barred when that employer principally controls and supervises the worker. What counts is what the petitioner developed: its own product design, its own integration method, its own service procedures, its own diagnostic approach. Product manuals, training records, project histories and declarations from informed supervisors can explain the knowledge without relying on a claim that no colleague could ever do the work. Training materials, controlled-access records and examples of troubleshooting decisions can show what cannot be learned from ordinary industry material. The decision is whether the evidence shows advanced or uncommon organizational knowledge rather than strong general industry skill.
Sources reviewed 2026-09-07. This guide covers a preparation focus; it is not an individual eligibility assessment.