International social work involves various organizations at the global level including the United Nations, World Health Organization, World Bank, and non-governmental organizations. Social work roles within these international organizations can include casework, community development, planning, policy work, administration, and research. There is no single agreed upon definition of international social work, but it generally involves exchanges or relationships between two or more countries. Globalization is a process that increases human interaction worldwide and transcends traditional boundaries, though it also poses challenges for ensuring social welfare and equitable development. Cultural relativism is important in international social work to adapt practices to local contexts, but complex issues around human rights must also be considered.