Background
In its earlier decision, Clapson v Knight, 2026 BCCA 352, the Court of Appeal allowed Kathryn Martha Clapson’s appeal from a damages award arising from a motor vehicle accident. She had challenged the assessment of past and future loss of earning capacity and a five percent reduction imposed for an alleged failure to mitigate her loss.
The Court increased the future loss-of-earning-capacity award from $1.375 million to $1.475 million and set aside the five percent mitigation deduction, producing a further increase of more than $70,000. The parties then disputed costs: Clapson sought her costs of the appeal, while the respondents argued that each side should bear its own costs because she had not achieved substantial success.
The Court’s Holding
The Court held that Clapson was substantially successful and awarded her costs of the appeal. Substantial success depends on the overall effect of the appellate judgment, not a mechanical count of successful grounds or success on every argument.
Although Clapson obtained substantially less than the full increase she had sought and failed on numerous grounds, the appeal corrected non-trivial errors that significantly affected her damages. The resulting increase exceeded $170,000, which the Court rejected as merely minimal despite representing approximately 10.9% of the trial award.
Key Takeaways
- Substantial success on appeal is assessed by the judgment’s overall effect, not by tallying successful grounds.
- A party need not obtain everything sought on appeal to qualify for appellate costs.
- Correcting non-trivial errors that increased damages by more than $170,000 constituted substantial success.
Why It Matters
The decision confirms that appellate costs turn on a practical, contextual assessment of the result. Courts may treat a party as substantially successful where the appeal produces a meaningful monetary recovery, even if many arguments fail and the recovery is considerably smaller than requested.