Questão jurídica principal
Whether the cantonal court acted arbitrarily in finding that the applicable notice period was one month, not three months.
Decisão extraída
No arbitrary fact-finding or application of law was shown; the appellant failed to prove that a valid three-month notice period had become part of the contracts.
Fundamentação extraída
The respondents did not accept a valid three-month notice period, and the appellant did not sufficiently demonstrate a contractual amendment or valid incorporation of the later reglement. The challenged finding was therefore not manifestly untenable.