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concurring. We remain of the view that the rule of law requires courts
to have the final word with regard to general questions of law that are
“of central importance to the legal system as a whole”. However, a
return to first principles reveals that it is not necessary to evaluate the
decision maker’s specialized expertise in order to determine whether
the correctness standard must be applied in cases involving such
questions. As indicated above (at para. 31) of the reasons, the
consideration of expertise is folded into the new starting point adopted
in these reasons, namely the presumption of reasonableness review.
[59] As the majority of the Court recognized in Dunsmuir, the key
underlying rationale for this category of questions is the reality that
certain general questions of law “require uniform and consistent
answers” as a result of “their impact on the administration of justice
as a whole”: Dunsmuir, para. 60. In these cases, correctness review is
necessary to resolve general questions of law that are of “fundamental
importance and broad applicability”, with significant legal
consequences for the justice system as a whole or for other institutions
of government: see Toronto (City), at para. 70; Alberta (Information
and Privacy Commissioner) v. University of Calgary, 2016 SCC 53,
[2016] 2 S.C.R. 555, at para. 20; Canadian National Railway [2014
SCC 40], at para. 60; Chagnon v. Syndicat de la fonction publique et
parapublique du Québec, 2018 SCC 39, [2018] 2 S.C.R. 687, at para.
17; Saguenay [2015 SCC 16], at para. 51; Canada (Canadian Human
Rights Commission) v. Canada (Attorney General), 2011 SCC 53,
[2011] 3 S.C.R. 471 (“Mowat”), at para. 22; Commission scolaire de
Laval v. Syndicat de l’enseignement de la région de Laval, 2016 SCC
8, [2016] 1 S.C.R. 29, at para. 38. For example, the question in
University of Calgary [2016 SCC 53] could not be resolved by
applying the reasonableness standard, because the decision would
have had legal implications for a wide variety of other statutes and
because the uniform protection of solicitor-client privilege — at issue
in that case — is necessary for the proper functioning of the justice
system: University of Calgary, at paras. 19-26. As this shows, the
resolution of general questions of law “of central importance to the
legal system as a whole” has implications beyond the decision at hand,
hence the need for “uniform and consistent answers”.
[60] This Court’s jurisprudence continues to provide important
guidance regarding what constitutes a general question of law of
central importance to the legal system as a whole. For example, the
following general questions of law have been held to be of central
importance to the legal system as a whole: when an administrative
proceeding will be barred by the doctrines of res judicata and abuse
of process (Toronto (City), at para. 15); the scope of the state’s duty
of religious neutrality (Saguenay, at para. 49); the appropriateness of
limits on solicitor-client privilege (University of Calgary, at para. 20);
and the scope of parliamentary privilege (Chagnon, at para. 17). We