The basis for all of its work and its most important asset is the trust of the population. In order to ensure this remains so and to continuously improve its work, the GRC is subject to a number of voluntary coordinated control mechanisms. Projects with public funding are subject to regular control of the responsible federal ministry or the Bundesverwaltungsamt administrative office. The GRC is compliant with special conditions as apply to international projects co-funded by the EU or federal ministries. One of the largest donors, the European Humanitarian Aid department ECHO , organises regular reviews of both financial and organisational structures as well as of internal control systems.