Canadian administrative law is the body of law "that applies to all administrative decisions, whether issued by front-line officials, ministers, economic regulatory agencies, or administrative tribunals, with interpretations of law and exercises of discretion subject to the same . . . rules."Paul Daly, "A Culture of Justification," at p. 10. "Non-lawyer ministerial delegates . . . are subject to the same framework as legally trained adjudicators with decades of experience serving in well-resourced administrative tribunals." Administrative law is concerned primarily with ensuring that administrative decision-makers remain within the boundaries of their authority (substantive review) and observe procedural fairness (rights for those affected by the decision to participate in the decision-making process).

Sources of law The powers of an administrative decision-maker ("ADM") are primarily created by statute, which is known as the "enabling statute". These powers are limited by the legislative authority of the enabling government provided under section 91 or 92 of the Constitution Act, 1867. Superior Courts (known as Section 96 Courts) have an inherent power at common law to review any decision of an ADM. A judicial review allows for the court to consider the entire decision-making process, including the process, the findings of fact and of law. The power of judicial review is found either in the enabling statute or by virtue of the common law.Many provinces such as British Columbia, Ontario, and Prince Edward Island, as well as the federal government, have codified the common law power. All federal ADMs are reviewable under the Federal Court Act RSC 1985, C. F-7 The common law powers are derived from the four original writs of certiorari, prohibition, mandamus and habeas corpus.

These powers are also frequently limited by privative clauses or finality clauses within the enabling statute. As established in Crevier v Quebec (AG), the Constitution requires that the courts be able to supervise errors of ADMs and so the legislature cannot completely oust the courts from that power, nor can an ADM completely supplant the courts role. Where a privative clause provides a limited right of appeal, the courts may exercise the discretion to grant judicial review only where the right of appeal fails to provide an adequate alternative remedy.; citing

Appellate review

Courts may review a decision through a statutory appeal when such appeal is explicitly provided by the enabling statute that created the administrative body. The scope of such appeal is defined and described by the terms of the enabling statute.

In Canada (Minister of Citizenship and Immigration) v Vavilov, the Supreme Court of Canada held that where a statute provides for an appeal from an administrative decision to a court, it has subjected the administrative regime to appellate oversight and indicated that it expects the court to scrutinize such administrative decisions on an appellate basis.

A court hearing such an appeal must apply appellate standards of review to the administrative decision. This means that when considering questions of law raised in the appeal, the court would apply the standard of correctness. When reviewing questions of fact (or questions of mixed fact and law when the legal principle is not readily extricable), the court applies the standard of "palpable and overriding error". The legislature is free to deviate from this appellate standard of review by prescribing a different standard in the applicable statute.

Substantive review

When performing substantive review, formally a judicial review, the court considers the merits of an administrative decision and determines if the decision is so defective that it should be remitted for reconsideration.

Standards of review

Historical practice (pre-Vavilov)

Prior to the landmark decision of Canada (Minister of Citizenship and Immigration) v Vavilov, 2019 SCC 65, courts would undertake highly-contextual standard of review analyses. A court would consider precedents, the relative expertise of the decision maker in question, the nature of the issue in dispute and the content and context of the governing legislation. Reasoning from these factors, the court would determine the level of scrutiny that it would apply in the review of the particular administrative decision in issue.

In Vavilov, the Supreme Court of Canada explicitly did away with the contextual analysis for standard of review previously established, in an effort to streamline and simplify the standard of review framework. In so doing, the Supreme Court of Canada sought to give greater effect and meaning to the express statutory right of appeal, which is understood to be the key factor representing legislative intention on the standard of review to be applied in judicial review of an administrative decision. The presence of an express statutory right of appeal in the enabling statute is understood to mean that the legislature intended the courts to play an appellate role, and apply a less deferential standard of review. Concomitantly, it is presumed from the lack of a statutory of appeal that the Legislature intended the courts to apply a more deferential standard of review, namely, the standard of reasonableness. It is unnecessary to undertake a separate analytical framework to decide what standard of review should apply.

Current practice (post-Vavilov)

There are two standards of review available to courts: reasonableness and correctness. A third standard of review, patent unreasonableness, was previously abolished in Dunsmuir (though it still exists as a standard where provided for by provincial legislation; e.g., the British Columbia Administrative Tribunals Act).

The standard of reasonableness is the default and presumptive standard of review that applies to all administrative decisions. This presumption may be rebutted in two situations: (i) where the legislation has indicated that a standard of correctness applies, and (ii) where the rule of law requires that the standard of correctness applies. The second situation is engaged for certain categories of questions, such as constitutional questions, general questions of law of central importance to the legal system as a whole and questions related to the jurisdictional boundaries between two or more administrative bodies.

Reasonableness Reasonableness is the deferential standard of review that presumptively applies to all administrative decisions. Reasonableness review focuses on the decision actually made by the decision maker, including both the decision maker's reasoning process and the outcome. The reviewing court must refrain from deciding the issue themselves, and must consider only whether the decision made by the administrative decision maker, including both its rationale and outcome, was unreasonable.

In particular, the reviewing court asks whether the decision bears the hallmarks of reasonableness — justification, transparency and intelligibility — and whether it is justified in relation to the relevant factual and legal constraints that bear on the decision. A reasonable decision is one that is based on an internally coherent and rational chain of analysis and that is justified in relation to the facts and law that constrain the decision maker.

Any shortcomings or flaws relied on by the party challenging the decision must be sufficiently central or significant to render the decision unreasonable. In Vavilov, the Supreme Court of Canada gave, as example, two types of fundamental flaws in an administrative decision. First is a failure of rationality internal to the reasoning process. The second arises when a decision is in some respect untenable in light of the relevant factual and legal constraints that bear on it.

Reasonableness review is not a line-by-line treasure hunt for error, but the reviewing court must be able to trace the decision maker's reasoning without encountering any fatal flaws in its overarching logic, and there must be a line of analysis within the given reasons that could reasonably lead the tribunal from the evidence before it to the conclusion at which it arrived.

A decision must also be justified in relation to the constellation of law and facts that are relevant to the decision. A reviewing court may find a decision unreasonable when it is examined against contextual considerations such as the governing statutory scheme; other relevant statutory or common law; the principles of statutory interpretation; the evidence before the decision maker and facts of which the decision maker may take notice; the submissions of the parties; the past practices and decisions of the administrative body; and the potential impact of the decision on the individual to whom it applies.

The reviewing court must refrain from “reweighing and reassessing the evidence considered by the decision maker”. However, the reasonableness of a decision may be jeopardized where the decision maker has fundamentally misapprehended or failed to account for the evidence before it.

In Vavilov, the Supreme Court of Canada recognized that the review of reasonableness may be challenging in contexts where formal reasons have not been, and are not required to be provided for a decision. Nonetheless, the reviewing court must look to the record as a whole to understand the decision, and in doing so, the court will often uncover a clear rationale for the decision. When no reasons have been provided and neither the record nor the larger context sheds light on the basis for the decision, the reviewing court must still examine the decision in light of the relevant constraints on the decision maker in order to determine whether the decision is reasonable.

Correctness Correctness is the less deferential standard that a court can give to an administrative decision maker. The court will give no deference at all and will judge the decision on the basis of whether it is correct in law. A court may substitute its own opinion for that of the decision maker. Certain matters have been held by the court to always warrant a correctness standard:Vavilov, at para 53 questions of constitutional law and division of powers, a "true question of jurisdiction" (in determining whether an administrative decision-maker has properly exercised its authority granted under a statute), questions of general law that are both of central importance to the legal system as a whole and outside the adjudicator's specialized area of expertise, and questions regarding jurisdictional lines between two or more competing specialized tribunals.

Patent unreasonableness

The standard of "patent unreasonableness" was abolished by the Supreme Court of Canada in Dunsmuir.

Patent unreasonableness was the highest level of deference that the court could previously give to a decision maker, before it was abolished. This standard was found to be dissatisfactory as it allowed certain decisions that were unreasonable but not patently unreasonable to be upheld, giving rise to situations where individuals had to accept a decision of an administrative body that is nonetheless unreasonable.Dunsmuir, supra at para 42.

A number of provincial statutes, most notably British Columbia's Administrative Tribunals Act, continue to adopt the patent unreasonableness standard. Because a statute is superior to common law, the patent unreasonableness standard is applicable when courts apply these statutes

Procedural fairness