The focus is on the CTA with a double sided trust arrangement, which has become the market standard for insolvency protection of the relevant payment claims of the individual employee by way of a CTA solution at the latest since the judgements of the Federal Labour Court (Bundesarbeitsgericht, BAG) of 18 July 2013 (6 AZR 47/12) and 22 September 2020 (3 AZR 303/18, CTA rulings).