IN THIS GUIDE · A machinist's transfer is the case that usually fails: what would have to be true for it to work
Start with the L-1B eligibility and application overview
Why excellent trade skill is the wrong kind of knowledge
The classification distinguishes specialized organizational knowledge from expertise that is commonly held in the occupation. Programming complex tool paths, holding tight tolerances and setting up difficult work are marks of a very good machinist, but those facts alone describe general trade expertise rather than special knowledge of the organization’s product, service, research, equipment, techniques or management, or advanced knowledge of its processes or procedures. Length of service is not the test either; a person can work fifteen years without holding knowledge that is special or advanced under that standard.
What would have to be true instead
Company-created or proprietary knowledge can be strong evidence, but it is not required. If this shop has developed its own fixturing system for a family of parts, its own process qualification procedure for a regulated customer, a proprietary post-processor for its machines, or an inspection method it will not disclose, and if this machinist created or maintains it, those facts may support the petition. The evidence follows: internal procedure documents with his name on them, the customer’s process approval referencing his method, the training material he wrote and the change history. The broader question is what is special or advanced about his knowledge and how the evidence distinguishes it from knowledge commonly held or easily transferred in the industry.
Where he would work, and the trap in this arrangement
If the affiliate intends to place him at a customer's plant, a further restriction applies: placement at an unaffiliated worksite is permitted only where the petitioner retains control and supervision of the work and the arrangement is not, in substance, supplying labour to that customer. A machinist sent to fill a gap on a customer's floor, taking direction from that customer's supervisor, is the paradigm of what is not allowed. Keeping him inside the affiliate's own shop, on its payroll, under its supervision, removes the issue, and the petition should say so explicitly and attach the lease and organization chart.
The alternatives worth pricing before filing
If the honest answer is that his knowledge is general trade expertise rather than special or advanced organizational knowledge, filing anyway costs money, months and a refusal on the record. The alternatives are worth costing instead: whether the affiliate can recruit locally, whether he can be engaged in Ontario on work the affiliate sends north, whether a different classification fits his role, or whether the shop should develop and document processes that give employees genuinely special or advanced knowledge. Note also that the five-year L-1B maximum and seven-year L-1A maximum count prior time spent in either L classification, subject to the rules for time spent outside the United States.
Sources reviewed 2026-09-07. This guide covers a preparation focus; it is not an individual eligibility assessment.