With a contract for work and services, the offering person or organisation commits to achieving a defined project success. This is not only a promise that the measures will be implemented and documented, but that the described result will actually be achieved. In this case, it is the result that is rewarded, not the implementation of the measures. Therefore, the measures do not have to be reported; only the defined result has to be proven. If the defined result is not achieved, the investors can reclaim the amounts they have paid. Due to the strict requirements and the higher risk, providers will calculate higher costs for this type of contract.