No. Each household member’s actual eligibility and status need their own assessment. A qualifying L spouse may work incident to valid status with appropriate evidence.
Keep people and records matched correctly
Eligible temporary dependents include a qualifying spouse and unmarried children under 21; children receive no spousal work benefit. A group relocation arrangement does not merge individual permissions.
The legal position is settled, but the practical one involves a document a US employer will want in its hiring file, so the spouse should be prepared to explain the basis of employment authorization and to produce the admission record showing L-2 status. Because the authorization arises from the status itself, a spouse can accept employment on arrival rather than waiting out an application; obtaining a document that evidences the authorization simply makes hiring easier in practice. Confirm the spouse's own documentation of employment authorization rather than assuming a physical card is always issued or always required, and track children's schooling and age-related deadlines separately from the principal applicant's timeline. Confirm each dependant’s own status and intended activity separately, including anyone who plans to keep working for a Canadian employer remotely, since that arrangement raises questions worth resolving before departure rather than after.