Question juridique clé
Whether the employee proved overtime sufficiently to allow estimation under Art. 42(2) CO
Solution extraite
The employee proved, through witness testimony and surrounding circumstances, that overtime was performed and its extent could be estimated.
Motifs extraits
Where overtime is established but cannot be proven exactly, the court may estimate it under Art. 42(2) CO. The cantonal court did not merely rely on probability; it found the overtime manifestly shown by the evidence. Given the lack of time-recording system, testimony was an adequate means of proof.