Kernrechtsfrage
Whether the appeal to the cantonal supervisory authority was filed in time after the first-instance decision was served by postal notice only.
Extrahierter Entscheid
The appeal was timely because the decision was deemed served on the seventh day after the failed delivery attempt, so the ten-day deadline ended on 2010-12-07.
Extrahierte Begründung
For registered mail, service fiction arises seven days after the first unsuccessful delivery attempt, regardless of the postal pickup period. Since the notice was left on 2009-11-18, deemed service occurred on 2009-11-25; the appeal period therefore ran from 2009-11-26 and, because the tenth day fell on a Saturday, extended to 2009-12-07.