C. Aligning complementary , duplicate and conflicting mandates Particularly in humanitarian situations , the operational mandates of OCHA , OHCHR , UNDP , the United Nations Population Fund ( UNFPA ) , the Office of the United Nations High Commissioner for Refugees ( UNHCR ) , the United Nations Children 's Fund ( UNICEF ) , the United Nations Development Fund for Women ( UNIFEM ) and WFP can be complementary or duplicate , particularly in cross-cutting issues such as protection , sustainable development , human rights and gender .