Kernrechtsfrage
Whether the employee proved that she worked 37.5 hours per week and was therefore entitled to the claimed wages
Extrahierter Entscheid
The employee proved the 37.5-hour weekly workload; the wage claim was therefore upheld.
Extrahierte Begründung
Article 8 CC did not help the employer because the cantonal court had already formed a conviction from the evidence. The finding was not arbitrary: a coworker testified to substantial administrative tasks, the collective-agreement control body corroborated the workload, and the employer's own insurance-related declaration indicated 37.5 hours. The signed final receipt had no legal effect because there was no reciprocal concession and mandatory collective-agreement minimum pay cannot be waived.