Kernrechtsfrage
Whether the post-apprenticeship salary had been contractually agreed or had to be set as usual salary under Art. 322 CO
Extrahierter Entscheid
No sufficiently specific salary agreement was established; the cantonal court could rely on the usual salary.
Extrahierte Begründung
The alleged indications were too vague to prove a common intention or an objectively ascertainable agreement on a monthly salary of about CHF 1,000.