Kernrechtsfrage
Whether the IV back payment could be set off against contribution claims despite the debtor's alleged subsistence minimum.
Extrahierter Entscheid
The subsistence-minimum bar also applies to retroactive disability-insurance benefit payments for the period to which the payment relates; the case must be re-examined under that standard.
Extrahierte Begründung
No convincing reasons existed to change settled case law. The purpose of the set-off bar is to prevent actual impoverishment, and that purpose is still relevant for the period covered by a back payment. The administration should not be able to bypass the protection by delaying the award. Hypothetical income cannot be imputed for calculating the debt-enforcement minimum.