A manager’s letter can describe employment facts but cannot establish the family’s work rights. The relatives need evidence of their own qualifying relationships and valid status.
Give each statement the document that can support it
Mark the passages describing the principal’s authority and separate any promises about a spouse’s future employment. The writer may know the business plan without being able to establish a marriage, a child’s age or an admission classification. For a qualifying L spouse, employment authorization can arise incident to valid status, supported by appropriate records. That benefit does not extend to L dependent children, who must be unmarried and under 21 to qualify. Collect the personal records beside the letter rather than asking the manager to certify facts outside their knowledge. A stronger recommendation cannot replace missing individual status evidence.
Where the initial period is limited to one year, weigh leases, school enrolments and a spouse's employment against that horizon and against the possibility that the operation does not grow as planned. The principal’s management petition should accurately describe the staffing plan without assuming an accompanying relative is already authorized to fill it.