Which law prevails over all other legal sources related to insurance companies?

The Canadian Constitution is the supreme law of Canada and prevails over all other legal sources, including those related to insurance companies. This is because any law or regulation must comply with the provisions outlined in the Constitution, which establishes the framework for governance in Canada. When it comes to insurance companies, while there are various laws that govern their operations—such as provincial laws regulating insurance practices—the overriding authority remains with the Constitution.

Provincial laws indeed play a significant role in the regulation of insurance within their respective jurisdictions, but they cannot contravene constitutional principles. Similarly, international law may influence domestic insurance policies, but it is subordinate to the Constitution. Commercial law, which governs business operations, also falls under provincial jurisdiction and is not as encompassing as constitutional law. Thus, the Constitution's status as the highest legal authority is crucial for understanding legal hierarchies in Canada.