Kernrechtsfrage
Whether the pension foundation could invoke lack of enrichment under Art. 64 CO to refuse restitution of overpaid contributions.
Extrahierter Entscheid
The foundation could not rely on lack of enrichment because, at the relevant time, it was still in possession of part of the overpaid sums and had not shown a good-faith dissipation for that part.
Extrahierte Begründung
The decisive moment is receipt of the creditor's restitution demand. By then, two employees' free-passage benefits had already been paid out, but one overpayment remained with the foundation. Because the foundation was still enriched at that point regarding that amount, the good-faith dissipation defense failed.