12.1 Natural Justice, Fairness & the Statutory Powers Procedure Act

Administrative law questions on the P1 exam test whether you understand the legal floor beneath every tribunal hearing you might attend as a paralegal — the Landlord and Tenant Board, WSIAT, the Human Rights Tribunal of Ontario, and dozens of others covered later in this guide. Every one of those bodies is bound by two overlapping sources of fairness law: the common law duty of procedural fairness (also called natural justice) and, for most Ontario tribunals, the Statutory Powers Procedure Act (SPPA), R.S.O. 1990, c. S.22. Knowing where these rules come from — and how they interact — is the foundation for nearly every other administrative-law topic on the exam.

The Two Pillars of Natural Justice

Natural justice rests on two Latin maxims that predate any modern statute:

• Audi alteram partem ("hear the other side") — a party must receive notice of the case against them and a genuine opportunity to respond before an adverse decision is made.
• Nemo judex in causa sua ("no one may be a judge in their own cause") — the decision-maker must be free of disqualifying bias or a personal or financial stake in the outcome.

Every fairness rule tested on the P1 exam is a variation on one of these two ideas, whether the fact pattern involves an adjudicator, a licensing panel, or a hearing officer reviewing a benefits claim.

Fairness Is a Sliding Scale, Not a Fixed Checklist

A common misconception is that "procedural fairness" means every tribunal must hold a full trial-style hearing. It does not. The Supreme Court of Canada described fairness as a spectrum in Nicholson v Haldimand-Norfolk Regional Police Commissioners (1979) and refined the analysis in the leading case, Baker v Canada (Minister of Citizenship and Immigration) (1999). Baker sets out five contextual factors that determine how much process is "due" in a given case:

1. The nature of the decision and the process used to reach it — the more a process resembles a judicial decision, the more procedural protection is owed.
2. The statutory scheme — a scheme with no appeal route tends to require greater fairness at the initial hearing.
3. The importance of the decision to the individual affected — decisions with severe personal consequences (loss of livelihood, benefits, or liberty-adjacent interests) demand more robust safeguards.
4. Legitimate expectations — if a tribunal's own practices or representations promised a certain procedure, departing from it without notice can itself be unfair.
5. The tribunal's own choice of procedure — deference is given to a tribunal's institutional expertise in designing its process, provided the core minimum is met.

For the exam, remember the practical range: at one end sits a routine administrative decision needing only minimal notice; at the other sits a hearing that can end someone's licence to work, which demands disclosure, an oral hearing, and reasons. Most tribunal hearings a paralegal attends — LTB, WSIAT, HRTO — sit toward the higher end of that scale because the outcomes materially affect a person's housing, income, or equality rights.

Bias: Actual, Reasonable Apprehension & Institutional

A decision can be procedurally unfair even without proof that the decision-maker was actually prejudiced. The test, from Committee for Justice and Liberty v National Energy Board (1978), asks whether a reasonable, right-minded, and informed person, viewing the matter realistically and practically, would conclude it is more likely than not that the decision-maker, whether consciously or not, would not decide fairly. This is the reasonable apprehension of bias standard, and it is deliberately easier to meet than proving actual bias — a paralegal does not need to show the adjudicator was corrupt, only that a fair-minded observer would doubt their impartiality (for example, a personal relationship with a party, or a financial interest in the outcome). Institutional bias is a related but distinct concept: it asks whether the tribunal's structure itself — such as a decision-maker who also investigates the same file, or performance incentives tied to outcomes — creates a systemic risk of unfairness across cases, not just in one hearing.

The SPPA: Ontario's General Code of Tribunal Procedure

Where common law fairness is flexible and case-by-case, the SPPA supplies concrete, codified minimums that apply automatically whenever a tribunal exercises a "statutory power of decision" and a hearing is required by statute (or otherwise) before the decision is made — unless the tribunal's own enabling statute expressly excludes the SPPA or a specific section. Many of Ontario's busiest tribunals (LTB, HRTO, WSIAT, Social Benefits Tribunal) are subject to it, layered with their own tribunal-specific rules of practice that fill in the details the SPPA leaves open.

The evidence rule in section 15 is one of the most exam-relevant distinctions between tribunals and courts, and it is expanded on in the next section: a tribunal is not bound by the strict rules of evidence that apply in a courtroom, so hearsay that a judge would exclude can be admitted and relied upon, subject only to relevance, privilege, and a prohibition on unduly repetitious evidence.

Applying It: A Paralegal Scenario

Suppose a paralegal represents a tenant at an LTB hearing where the adjudicator refuses to let the tenant call a key witness and issues a decision the same day with no written reasons, despite a request. Two separate fairness problems exist: refusing the witness may breach both the audi alteram partem principle and SPPA s. 10.1's guarantee to call witnesses, while refusing reasons on request breaches SPPA s. 17 directly. Spotting which rule is common law and which is a specific statutory obligation — and citing the right one — is exactly the kind of issue-identification the P1 exam rewards.