A provable HFU entry at the relevant payment time can exclude liability under sec. 67a ASVG.
Keep the contractor, the remuneration amount, the payment date and the printout or electronic record of the HFU inspection together. The relevant time is the legal act by which the remuneration debt is performed.
Also check whether the service qualifies as hiring out of workers and whether the contract and payment documents are complete. Where the entry, payment or type of service is disputed, the liability should be assessed before the next payment.