At first sight , ECPS and its task forces have not , however , been brought up to the level of operational effectiveness of the cluster system established by other executive committees , notably the Inter-Agency Standing Committee 's Executive Committee on Humanitarian Affairs ( ECHA ) . The Executive Committee on Economic and Social Affairs ( EC-ESA ) is an executive committee of the United Nations and aims to bring coherence and common approaches to United Nations entities engaged in normative , analytical and technical work in the economic and social field .