# Interpretive Presumptions — Expanded Catalog Default rules that apply unless displaced by clear language or context. --- ## Presumption Against Absurdity **Statement:** The legislature is presumed not to intend absurd consequences. An interpretation leading to results reasonable people would regard as unjust, unworkable, or self-defeating is disfavoured. **Basis:** Presumed rationality of legislation. **Application:** Available where a literal reading produces an outcome the drafter cannot have intended. Not available to defeat clear text that produces harsh but not absurd results. **Example:** A regulation banning "dogs" from a park is read to permit guide dogs, avoiding the absurd result of excluding persons with disabilities. --- ## Presumption of Consistent Meaning **Statement:** A word or phrase used more than once in the same enactment is presumed to have the same meaning throughout. **Basis:** Legislative competence and consistency. **Application:** Attach one meaning per term. Where different meanings are intended, the legislature is presumed to use different terms. **Rebuttable:** Yes — where context clearly indicates different meanings in different provisions, the presumption yields. --- ## Presumption Against Redundancy **Statement:** Every word in a statute is presumed to have work to do. An interpretation rendering words superfluous is disfavoured. **Basis:** Careful drafting is presumed. **Application:** If two interpretations exist, prefer the one that gives effect to all the words. **Cautions:** The presumption is not absolute — drafters do sometimes include belt-and-suspenders language for clarity. But an interpretation that renders whole phrases meaningless should be examined critically. --- ## Presumption Against Retroactivity **Statement:** Legislation is presumed to apply prospectively only. Retroactive application requires clear language. **Basis:** Fairness — persons should be able to arrange their affairs based on the law in force at the time. **Retroactivity distinguished:** - **Retroactive** — new law applies to past facts as though it had been in force at the time - **Retrospective** — new law affects the future consequences of past facts (permitted more freely) - **Prospective** — new law applies to facts arising after enactment (the default) **Rebuttable:** Yes — by express language or necessary implication. **Especially strong** for: - Criminal penalties - Vested property rights - Punitive provisions --- ## Presumption in Favour of Liberty (Rule of Lenity) **Statement:** Ambiguous criminal or penal provisions are construed narrowly, in favour of the person affected. **Basis:** Notice — persons should not be punished under ambiguous provisions. **Application:** Where a penal provision is genuinely ambiguous after applying the modern approach, the interpretation more favourable to the accused is preferred. **Cautions:** The rule applies where genuine ambiguity remains. It is not a general rule of narrow construction of penal statutes. --- ## Presumption Against Interference with Vested Rights **Statement:** Legislation is presumed not to interfere with vested rights unless clearly stated. **Basis:** Property protection and continuity of legal expectations. **Application:** Where an interpretation would strip existing rights, alternative interpretations preserving those rights are preferred if plausible. --- ## Presumption of Constitutionality **Statement:** Where two interpretations are available and one is constitutional while the other is not, the constitutional interpretation is preferred. **Basis:** Legislature is presumed to intend constitutional legislation. **Application:** In Charter analysis and division-of-powers cases, interpretations that maintain constitutionality are preferred where plausible. **Cautions:** The presumption cannot save legislation whose only plausible interpretation is unconstitutional. In that case, the court will address the constitutional question directly. --- ## Presumption Against Extraterritorial Application **Statement:** Statutes are presumed to apply only within the enacting jurisdiction unless stated otherwise. **Basis:** Comity, respect for other legal systems. **Application:** Ambiguous provisions are read as applying only within Canada (federally) or within the province (provincially). --- ## Presumption of Compliance with International Law **Statement:** Ambiguous provisions are presumed to comply with Canada's international obligations. **Basis:** Legislature is presumed to legislate consistently with Canada's international commitments. **Application:** Where a statute implements or touches on an international agreement, the interpretation aligned with the agreement is preferred. **Especially strong** for statutes implementing: - Human rights treaties - Trade agreements - Environmental accords --- ## Presumption of Consistency with Common Law **Statement:** Statutes are presumed not to alter the common law more than is necessary to achieve their purpose. **Basis:** Continuity of the legal system. **Application:** Where the statute is silent or ambiguous on a matter covered by common law, the common law continues to apply. **Cautions:** Modern statutes often do displace common law substantially. The presumption is a default, not a bar. --- ## Presumption Against Crown Liability **Statement:** The Crown is presumed not to be bound by a statute unless the statute expressly or by necessary implication binds it. **Basis:** Historical Crown immunity. **Application:** Read Crown liability provisions carefully. General liability language may or may not bind the Crown. **Modified by:** Crown Liability Acts (federal and provincial), which largely subject the Crown to ordinary tort and contract law. --- ## Presumption Against Ouster of Jurisdiction **Statement:** Statutes are presumed not to oust the jurisdiction of the ordinary courts, particularly the superior courts, unless clearly stated. **Basis:** Rule of law and access to the courts. **Application:** Privative clauses (clauses purporting to bar judicial review) are read narrowly. Even strong privative clauses do not fully oust jurisdiction to review for jurisdictional error or fundamental procedural fairness. Post-*Crevier* 1981 SCC — the constitutional minimum guarantees judicial review for jurisdictional error. --- ## Presumption Against Extinguishment of Aboriginal Rights **Statement:** Statutes are presumed not to extinguish Aboriginal or treaty rights except by clear and plain language. **Basis:** Constitutional protection under s.35 and honour of the Crown. **Application:** Any statute claimed to extinguish Aboriginal or treaty rights must be examined for clear and plain intent. --- ## Presumption of Ordinary Meaning **Statement:** Words are presumed to bear their ordinary meaning unless context or definition indicates otherwise. **Basis:** Communicative purpose of language. **Application:** Start with ordinary meaning. Depart only where context, purpose, or definition warrant. --- ## Presumption Against Producing Two Different Results **Statement:** Interpretations that produce different results for substantially identical situations are disfavoured. **Basis:** Equal treatment and rationality. **Application:** Where an interpretation would treat similar cases differently without apparent basis, alternatives are considered. --- ## Presumption of Legislative Awareness **Statement:** The legislature is presumed to know the existing law and to legislate against that background. **Basis:** Rationality of legislation. **Application:** Where the legislature enacts against a well-known common law or statutory background, silence on aspects of that background usually implies acceptance of the background. --- ## Applying Presumptions Presumptions are defaults, not commandments. To apply a presumption effectively: 1. Identify the specific presumption 2. Confirm the ambiguity or gap that triggers it 3. Show how the presumption resolves the question 4. Address any counter-presumptions or displacing text 5. Reach the interpretation Multiple presumptions may apply. Where they point in different directions, the analysis must weigh them in light of text, context, and purpose. Presumptions do not override clear text. They resolve ambiguity.