Kernrechtsfrage
Whether the cantonal court arbitrarily held that no agreement on compensation for extra work existed.
Extrahierter Entscheid
No arbitrariness was shown; the complaint did not substantiate a procedurally proper allegation that the parties had agreed extra work would be free of charge.
Extrahierte Begründung
The appellant failed to identify record references showing such a claim had been made in cantonal proceedings. The court was therefore entitled not to search the file for supporting evidence.