The Trial Warrior Wrong Legal
Test on Causation?
But what happens when a trial judge applies the wrong legal
test on causation?
Not exact matches
the Granger
causation test is based
on lags, and only implies priority in time, as you say, and was not worth a Nobel prize.
[34] In Resurfice, this Court summarized the cases as holding that a material contribution approach may be appropriate where it is «impossible» for the plaintiff to prove
causation on the «but for»
test and where it is clear that the defendant breached its duty of care (acted negligently) in a way that exposed the plaintiff to an unreasonable risk of injury.
[126] The «but for»
test is the general
test for factual
causation: the plaintiff must prove
on a balance of probabilities that but for the defendant's negligence, she would not have suffered her injuries.
Citing Greenhalgh v. ING Halifax Insurance Co., 2004 CanLII 21045 (
ON CA) and Martin v. 2064324 Ontario Inc. (Freeze Night Club), 2013 ONCA 19 (CanLII), the Court found the «
causation test» was modified.
The language of the jury question
on causation must reflect the «but for»
test and ought to track the language of Clements, although having the wrong wording does not necessarily produce a substantial wrong or miscarriage of justice.
Likewise, suits targeting companies» advertising practices — either claiming that ads disproportionately focused
on «heavy users» of food and or deceptively claimed that fast food could be nutritious — also flunked the
causation test.
In doing so the majority provided the following reasons
on the «but for»
test of
causation in negligence claims:
After noting the circumstances of the injury, one has to examine the claimant to establish current symptoms, note unresolved clinical problems at the time of examination and finally comment
on causation using the «but for»
test of whether the injury has caused the symptoms and clinical features, any complications, any losses and likelihood of resolution of residual problems.
The Supreme Court's summary of the issues in the appeal suggests that that all the Court was asked to do is clarify the meaning of the Resurfice material contribution
test for proof of the
causation requirements in causes of action in negligence and, then, determine the correct result in Clements based
on that
test.
On the basis of Resurfice and the evidence, the applicable
test for factual
causation was the but - for
test.
The
test for establishing
causation is the «but for»
test, which requires the plaintiff to prove
on the balance of probabilities that the defendant's negligence was necessary to bring about the injury.11 The «but - for»
test has almost universal acceptance as an instrument for ascertaining
causation.
The Supreme Court of Canada concluded in this decision that the material contribution
test was not applicable and returned the matter to the trial judge to be dealt with
on the correct basis of «but for»
causation.
Mahsa Dabirian is scheduled to speak at the Ontario Trial Lawyers Spring Conference
on «
Causation - «When The But For
Test is Unworkable»
While it is good that the Board has adopted the «significant contributing factor»
test for
causation for both chronic and traumatic mental stress, this is not adequate to ensure equality because the policy imposes a number of other arbitrary limits
on mental injuries.
Sharpe J.A. said that the Court was unable to discern the
test for
causation applied by the trial judge and held that there was no evidence
on a balance of probabilities that, but for the physician's negligence, the Plaintiff would not have lost her leg.
On the other hand, if the jury determines based on the evidence that the plaintiff would not likely have been injured without the defendant (s)'s negligence, the test for causation is satisfied and the defendant (s) will be liable for the plaintiff's injurie
On the other hand, if the jury determines based
on the evidence that the plaintiff would not likely have been injured without the defendant (s)'s negligence, the test for causation is satisfied and the defendant (s) will be liable for the plaintiff's injurie
on the evidence that the plaintiff would not likely have been injured without the defendant (s)'s negligence, the
test for
causation is satisfied and the defendant (s) will be liable for the plaintiff's injuries.
Thus, while the application of the wrong
test for
causation was an error of law, the error stemmed from the trial judge's failure to appreciate that the expert witnesses were unable to state that
causation was established
on a balance of probabilities.
At least one of the negligent persons» conduct was, for law, not a cause not a probable factual cause, at least based
on a valid application of the but - for
test which we are told, again, is the only approved method of establishing factual
causation.
And statutory compensation schemes — think workers» comp or motor vehicle accident accident benefits — where the Athey material contribution to injury
test (understood as a method of establishing factual
causation on the balance of probability) was adopted as the meaning of the
causation terminology in the statute were wrong in justifying their decisions based
on Athey, even if decision
on the meaning of the statute was correct?
As I've said to others, were I a trial judge who sat
on civil trials before Resurfice, I'd not know whether to be bemused or astounded at the suggested that the version of material contribution I applied then — which would have been the Athey version — was NOT a
test for proof of factual
causation on the balance of probability.
The Supreme Court restored the trial judgement, ruling that
causation should normally be decided
on the «but for»
test.
The material contribution
test achieves fairness in compensation because the plaintiff has already established a but for
causation on a global scale, but is unable to determine which specific defendant was responsible for the injury.
Are we back to a version of the pre-Resurfice situation where (so it was said), to succeed at all, a plaintiff had to get a finding that a defendant's negligence - related
causation had been established
on the balance of probability, regardless of the
test that was used?
The but - for
test is the only approved method of establishing factual
causation on the balance of probability.
Whatever else Clements means, it unquestionably holds that the but - for
test is a
test based
on «necessity», not merely «substantial connection» beyond de minimus, and that «material contribution» is not a reference to some method of establishing factual
causation on the balance of probability.
in reasons written by McLachlin CJ seemingly rejected, killed, and buried the Athey meaning of material contribution or materially contributed as a
test for proof of factual
causation on the balance of probability.
For now, Resurfice material contribution applies only in the situations described by Clements in para. 39, where the Court provided an explanation of the meaning of Resurfice «s «impossible to establish factual
causation on the balance of probability using the but - for
test.»
Resurfice seemingly declared an entirely different meaning for material contribution or materially contributed which eliminated the need, under that that
test, to prove factual
causation on the balance of probability and, in so doing, removed the concept of «material contribution» or «materially contributes» from the but - for lexicon.
The EAT allowed their appeals, holding that the correct
test for
causation in whistleblowing cases was that applying in discrimination cases, namely whether (with the reversal of the burden of proof in the Employment Rights Act 1996, s 48 (2)-RRB- the employer could show that the alleged detriment was «in no sense whatsoever»
on the grounds of the protected activity (applying Igen v Wong [2005] EWCA Civ 142, [2005] 3 All ER 812).
The SCC was, and is, correct in stating that if the ABCA's view was correct, the Athey material contribution
test, as the ABCA understood it, had become the default
test for proof of factual
causation on the balance of probability in negligence actions.
We also haven't seen any cases where a judge said that he or she, before Resurfice, would have found the factual
causation issue in favour of the plaintiff using Athey material contribution — finding factual
causation on the balance of probability — but, as a result of Resurfice, is now required to use the but - for
test and,
on the facts, must find the plaintiff failed to establish factual
causation on the balance of probability.
While the SCC rejected the details of the Clements analysis of Resurfice material contribution, the SCC seems to have accepted the BCCA explanation that Resurfice material contribution is not a
test for factual
causation but a policy — based approach that, in certain circumstances, will permit the courts to hold the caausation requirements of the cause of action have been satisfied notwithsanding that factual
causation has not been established
on the balance of probability.
Slatter J.A. noted, at para. 34, that the general
test for
causation in tort is that a plaintiff must generally establish
on a balance of probabilities that the injury would not have occurred but for «the negligence of the defendant»: Fullowka v. Pinkerton's of Canada Ltd., 2010 SCC 5 (CanLII) at para. 93; Resurfice Corp. v. Hanke, 2007 SCC 7 (CanLII) at paras. 21 — 22; Athey v. Leonati, 1996 CanLII 183 (SCC), [1996] 3 S.C.R. 458 at para. 14; and Clements v. Clements, 2012 SCC 32 (CanLII) at paras. 6 — 8.
The appellants argued that the trial proceeded
on a mistaken understanding of the appropriate
causation test to be applied in a case of delayed diagnosis and treatment.
[89] Based
on that foundation, Slatter J.A. concluded that in regards to the tort of negligent misrepresentation, a two - part
test for
causation arose.