Kernrechtsfrage
Who bears the burden of proving the receipt date when a decision is served by ordinary post?
Extrahierter Entscheid
If the authority uses ordinary mail and the date of receipt is disputed, the burden lies with the authority; in case of doubt, the recipient's account prevails.
Extrahierte Begründung
By choosing unregistered mailing, the authority causes the evidentiary uncertainty. Therefore the authority must bear the consequences of non-proof of delivery date.