Kernrechtsfrage
Whether the cantonal court violated the appellant's right to be heard by deciding pension entitlement on a substituted ground without prior notice.
Extrahierter Entscheid
Yes. The parties had not been informed that the court would assess whether a change of occupation was reasonably exigible, so the appellant could not comment or adduce evidence.
Extrahierte Begründung
A court intending to uphold an administrative decision on substituted grounds must allow the insured to respond. This essential issue had not been litigated below, and the Federal Court could not cure the defect due to its limited review of facts.