A qualifying L spouse’s employment permission comes from the spouse’s own appropriate status and evidence. It does not establish that the principal’s client assignment satisfies L-1B.
Review two different work arrangements
Check the spouse’s documents and the intended job independently. Eligible unmarried dependent children under 21 do not receive the L spouse’s incident-to-status employment permission. Separately review who controls and supervises the principal at the unaffiliated worksite and whether the assignment is labour for hire. Having two family members paid by different entities is not itself an answer to either person’s immigration requirements.
The authorization arises from the status rather than from a separate application, and the admission record is the evidence an employer will want to see, so it should be checked immediately on arrival and corrected if the category or period is recorded wrongly. Children admitted as L-2 dependants may enrol in school and are listed among the classes permitted to study, but they hold no work authorisation, which matters where a teenager expects summer employment. A household planning around two incomes should understand that the second one carries the risk attached to the first, which is an argument for raising any change in the principal's employment promptly rather than treating it as an internal matter.