Key legal question
Whether the refusal to take evidence violated the right to be heard and cantonal procedure
Extracted holding
The complaint was inadmissible and, in any event, the requested evidence concerned a legally irrelevant future amount to be received from SAirGroup.
Extracted reasoning
The appeal did not identify any concrete means of proof. Moreover, in a solidarity context the claimant need only deduct amounts already received, not hypothetical future recoveries from another debtor.