Why does the 100% success fee model generate additional costs for the client?

Nowadays, many companies, driven by cost savings, prefer to use a 100% success fee model in cooperation with recruitment agencies. However, there are a number of factors that often play a role in a customer’s failure to achieve the intended goal. Despite the fact that there is no fee for the service, but only for the effect itself, there is a high risk of additional costs associated with the protracted process, which can significantly exceed the agreed amount of remuneration with the agency.