The home address does not supply work permission. A qualifying E spouse may work incident to valid status with appropriate evidence; the actual status is what matters.
Assess the person and location of the work
Eligible dependents include a spouse and unmarried children under 21. Children do not receive the spousal work benefit. A household’s continuing Canadian ties do not replace the U.S. status assessment for activities performed there.
Because the spouse's authorization arrives with the status rather than through the investment, it is genuinely open: employment elsewhere, a professional post, or a separate business of the spouse's own are all possible, subject to any licensing rules the occupation itself imposes. Family businesses accumulate structure over decades: a holding company, a family trust for estate planning, shares issued to a spouse for income-splitting, an estate freeze that created several classes of shares. The planning failure is building the operation around unpaid family labour that has not yet been authorized: a dispatch function staffed by one person whose own process is still outstanding is a single point of failure for the whole enterprise.