IN THIS GUIDE · Ask the employer four questions before anyone calls the knowledge specialized
Start with the L-1B eligibility and application overview
What does the company itself treat as proprietary?
Freezing-tunnel parameters, optical-sorting calibrations and hold-and-release protocols that the company developed and does not share with competitors are candidates for specialized knowledge. Generic food-safety training, a standard HACCP plan and familiarity with a widely sold freezer are not; they are skills any competent engineer in the industry has. Ask the employer to identify which procedures are documented as internal, who wrote them, and how many people in the organization know them. If the honest answer is everyone on the line, the knowledge is not specialized. Sequence the evidence from pre-existing materials outward: internal manuals, version histories, training records, deployment tickets, customer requirements and declarations from knowledgeable supervisors. A post-filing description can explain those records but should not be their only source. This approach also identifies whether the planned assignment is implementation of company-specific knowledge or ordinary labour that the host business could obtain locally.
Where will the work physically happen?
If the engineer works at the affiliate's own plant, the placement is straightforward. If the plan is to station her at an unrelated co-packer's facility, the rule on offsite placement applies: the petitioner must keep control and supervision of her work, and the assignment must not be labour for hire that the host could fill with any engineer. The knowledge applied at the site must be the petitioner's own, which is easier to show when the protocols being implemented are the company's and the host is adopting them.
Can the corporate relationship be proven on paper?
Affiliates qualify when the same individuals or parent own both companies in roughly the same proportions. A U.S. affiliate owned by the founder's sibling with a different partner may not be an affiliate at all. Ask for share registers, incorporation records and any shareholder agreements for both entities, and confirm both will keep operating. The engineer's continuous year must be with the Canadian entity, full-time, within the three years before the petition, evidenced by payroll rather than an offer letter.
How long is the assignment meant to last?
L-1B is limited to five years in total, with H time counting toward the ceiling. A spouse holding L-2 status is authorized to work incident to status. Petitions are filed on Form I-129; Canadian citizens may present the approval at a port of entry without a visa stamp. If the assignment is really a ninety-day commissioning visit, the employer should be asked whether a business-visitor arrangement covers it, because a short after-sales service of equipment the Canadian company sold is a different question from staffing the U.S. plant.
Sources reviewed 2026-09-07. This guide covers a preparation focus; it is not an individual eligibility assessment.