Questione giuridica chiave
Whether the overtime clause validly excluded the statutory 25% surcharge for overtime worked before 19:00 on weekdays.
Decisione estratta
The clause did not clearly and validly exclude the statutory overtime surcharge for weekday overtime before 19:00.
Motivazione estratta
A derogation from Art. 321c(3) OR must be sufficiently clear and in writing; the wording here did not expressly waive the legal surcharge, and no factual consensus on such a waiver was established.