Kernrechtsfrage
Whether the cantonal appeal court had to estimate the duration of on-call interventions under Art. 42(2) OR
Extrahierter Entscheid
No. The worker had not alleged or proved the circumstances necessary to permit an estimate of intervention duration.
Extrahierte Begründung
Art. 42(2) OR eases proof of damage but does not eliminate the burden to plead and prove all reasonably accessible facts supporting estimation.