Jurisdiction, Legal System & Terminology

Jurisdiction, Legal System & Terminology

Quick Answer: Canada (outside Quebec) follows the common law tradition, where judge-made precedent and legislation both bind future decisions through the doctrine of stare decisis. Jurisdiction is the authority of a court or tribunal to hear a matter, and it has three dimensions: subject-matter, territorial, and personal. Getting the right terminology — plaintiff vs. applicant, appellant vs. respondent, Crown vs. accused — matters because Ontario's procedural rules use these terms precisely, and using the wrong one in a document can signal a drafting error or even the wrong proceeding type.

Common Law vs. Civil Law

Canada operates two parallel legal traditions:

• Common law governs private law (contracts, torts, property) in every province and territory except Quebec, and governs public law (constitutional and criminal law) across the entire country, including Quebec. Common law develops through judicial precedent — decisions in earlier cases guide the outcome of later, similar cases.
• Civil law governs private law matters in Quebec, codified in the Civil Code of Québec. Judges in Quebec interpret and apply the Code's general principles rather than building law primarily from prior case decisions, although Quebec courts do still respect binding precedent on questions of public law.

Criminal law is uniform nationwide because it falls under the federal Criminal Code, regardless of the private-law tradition in a given province.

Sources of Law and Their Hierarchy

Canadian law is layered, and higher sources override lower, conflicting ones:

1. The Constitution (the Constitution Act, 1867 and Constitution Act, 1982, including the Charter) — the supreme law of Canada; any law inconsistent with it is, to the extent of the inconsistency, of no force or effect (s. 52, Constitution Act, 1982).
2. Statutes and regulations — laws enacted by Parliament or a provincial legislature (statutes), and detailed rules made under authority delegated by a statute (regulations).
3. Common law / case law — judge-made law developed through decided cases, filling gaps statutes don't address and interpreting what statutes mean.

When a statute speaks directly to an issue, it displaces any conflicting common law rule — legislatures can override judge-made law (subject to constitutional limits). Where no statute governs, courts fall back on the common law.

Precedent and Stare Decisis

Stare decisis ("to stand by things decided") is the principle that courts should follow previously decided cases when the facts and legal issues are sufficiently similar. It operates in two directions:

• Vertical stare decisis (binding precedent): A court must follow the decisions of higher courts within its own hierarchy. An Ontario Court of Justice decision must follow Superior Court of Justice precedent on the same point, which must follow Court of Appeal for Ontario precedent, which must follow Supreme Court of Canada precedent.
• Horizontal stare decisis (persuasive precedent): Decisions from courts of equal rank, or from other provinces' courts, are not binding but may be persuasive — a judge can consider them but is not required to follow them.

Within a case, only the ratio decidendi (the legal reasoning necessary to the decision) is binding precedent. Comments a judge makes that are not necessary to the outcome — obiter dicta — are not binding but can still be persuasive.

Statutory Interpretation Basics

When the meaning of legislation is disputed, Canadian courts primarily apply the modern purposive approach: the words of a statute are to be read in their entire context, in their grammatical and ordinary sense, harmoniously with the scheme and object of the Act and the intention of the legislature. Ontario's Legislation Act, 2006 (and the federal Interpretation Act) supply default interpretive rules — for example, that legislation should be interpreted to give it a fair, large, and liberal interpretation that best ensures its objects are attained, and provide rules for computing time limits, which is directly relevant to limitation periods in paralegal practice.

Jurisdiction: Three Dimensions

"Jurisdiction" describes a court's or tribunal's legal authority to hear and decide a matter. A decision made without jurisdiction can be quashed regardless of how correct it might otherwise be. Jurisdiction has three components, and a court or tribunal generally needs all three:

Some tribunals have concurrent jurisdiction with the courts over certain issues (for example, some human rights issues can be raised at the Human Rights Tribunal of Ontario or as a defence/claim within a related court proceeding), which raises strategic questions about the best forum for a client's matter — covered further in later chapters on tribunals.

Standard Legal Terminology

Precision in terminology is tested directly on the P1 exam and matters in real practice because Ontario's Rules of Civil Procedure, Small Claims Court Rules, and Provincial Offences Act forms all use these terms in specific, non-interchangeable ways:

• Civil litigation: the party who starts the claim is the plaintiff; the party being sued is the defendant.
• Applications (a different civil procedure track from actions): the party who starts the application is the applicant; the responding party is the respondent.
• Appeals: the party appealing a decision is the appellant; the party defending the original decision is the respondent (regardless of what they were called at trial).
• Criminal and quasi-criminal (POA) proceedings: the prosecuting side is the Crown (represented by Crown counsel or, in POA matters, a prosecutor/provincial offences officer); the person charged is the accused or defendant (POA matters commonly use "defendant"). The person who swears the information starting a criminal charge is the informant.
• Administrative tribunals: terminology varies by tribunal — for example, the Landlord and Tenant Board uses "landlord" and "tenant"; the Human Rights Tribunal of Ontario uses "applicant" and "respondent."

Misusing these terms in a drafted document is more than a stylistic slip — it can suggest the wrong proceeding type was chosen entirely, which is exactly the kind of issue-spotting error the licensing exam is designed to catch.