"We have a clear guard rail system," concludes Mr. Blessing. This stipulates that the results of the interviews only end up with the responsible consultant and the direct manager. He emphasizes that the NPS is by no means used as a control medium, but rather for corporate development. In principle, however, the works council is played with open cards, as it must of course ultimately support the method. And the importance of the results for reflecting on and improving customer service, sales and external image is one of the biggest arguments in favor of the NPS survey. The right approach not only increases customer loyalty and positive perception, but also sales per customer. For this reason, the NPS survey can be warmly recommended to everyone.