Review each person’s lawful arrival and eligibility together with the revised opening and household budget. A delayed business launch may make later family travel practical, but no single commercial date determines their immigration rights. An eligible spouse and unmarried children under 21 may seek dependent status under the applicable process; approval dates are not guaranteed to coincide.
Weigh school terms against the construction schedule
For illustration, the principal might arrive first only once authorized for the intended U.S. work, while the spouse and children plan a later school break if their own documents permit it. Preparing applications alone does not authorize contractor supervision or family admission.
A qualifying E spouse generally may work incident to valid status with appropriate E-2S/I-94 or other proof; dependent children receive no work authorization from that status. Separate the household's decisions from the ones other parties make. A school registration deadline is set by a school, a consular appointment is scheduled by a post, admission is decided by an inspecting officer on arrival, and the opening date is set by a contractor and a permitting authority.
The family chooses only how to sequence itself around all of that. Decide who in the household tracks each person's own document set, since a spouse's steps and a child's steps do not advance because the principal's did. Keep the work question with its own owner as well: a qualifying E spouse may work incident to valid status with appropriate evidence, while dependent children receive no such authorization from that status.