If your debtor refuses to pay, a distraint order or freezing order to seize his property is a way to enforce or secure payment.
Definition: Distraint order / freezing order
A distraint order is used to secure assets of a debtor and render them for liquidation in order to satisfy a creditor.
This page contains information on the subject of freezing orders / distraint orders in Switzerland:
The Swiss federal code of Debt enforcement and recovery (SchKG) contains rules governing distraint orders / freezing orders.