The qualifying L spouse’s work authorization is based on status with appropriate documentation, not on possessing the principal applicant’s manufacturing knowledge.
Review the actual occupation separately
Confirm the spouse’s status and any applicable requirements for the intended job. Children gain no work permission solely through L dependent status. Do not confuse the principal’s knowledge evidence with the spouse’s individual employment basis.
The rule is simple: a child qualifies as a dependant while unmarried and under twenty-one, and on that birthday the derivative eligibility ends regardless of what the principal's status permits. On arrival, check that the admission record bears the L-2 spouse annotation; if it was omitted, request a correction before the first shift, because the dairy's employment verification relies on that record. Children may enrol at any level of school but may not work, and their status ends at 21 or on marriage, at which point a student classification or another route in their own right is needed. If the family intends to stay for the whole assignment, list each person's passport and Canadian status, since a spouse or child who is a permanent resident rather than a citizen will process L-2 at a consulate rather than at the border.