Company age does not grant the spouse status or employment permission.
Check the individual authorization
Qualifying L spouses may work incident to appropriate status with required evidence. Pending preparation and corporate registration are not that status.
The practical step is to check what appears on each family member's admission record, because that notation is what an American employer will look for when a spouse applies for work. Work authorization for spouses is one of the few places where the classifications diverge sharply, and it often influences a family's choice more than anything on the principal's side. Review each person’s actual status and intended activity; receiving shares or joining a family investment does not itself authorize employment. Employers occasionally ask for a document before adding a person to payroll, so it is sensible to know in advance what evidence of authorization the family will hold and to keep it accessible. A spouse intending to take salaried work needs evidence an employer will actually accept, so the practical question is which record satisfies that employer's verification process rather than whether permission exists in principle. Confirm the principal's remaining L-1A time, each dependant's passport expiry, a spouse's employment plans, and any child's school transition. Keep children's schooling plans separate from questions about work authorization or aging out of dependent status, since the principal applicant's proposed start date does not automatically resolve those questions.