Wook-Jin Chang is a respected diplomat in the field of international relations and development. As the Chief of the NGO Branch in the Department of Economic and Social Affairs (DESA) at the United Nations, he focuses on fostering collaboration between non-governmental organizations (NGOs) and the UN, promoting sustainable development, and advancing global social and economic progress.

Additionally, Chang oversees the accreditation and coordination of NGOs that work with the United Nations. He plays a crucial role in facilitating the participation of civil society organizations in UN activities, ensuring that their voices are heard in the global decision-making process. His leadership has strengthened the collaboration between the UN and NGOs, enhancing their collective impact on global development.