Ki-Soo Eun is Professor of Sociology and Demography, and Director, Center for Transnational Migration and Social Inclusion at the Graduate School of International Studies, Seoul National University. He was trained as a demographer and sociologist at Seoul National University and the University of Pennsylvania, where he got a PhD with a doctoral dissertation on a life course study with event history analysis and sequence analysis. His research interests lie in the lowest-low fertility and rapid aging in both developed and developing societies, care economy, care and care workers, transnational migration, time use study, family values, marriage and divorce, family history, and modernization of Korean society from a comparative perspective. For the last two decades, he has collaborated with East Asian family sociologists including Prof. Emiko Ochiai at Kyoto University for a Comparative Asian Family Study project conducting surveys in a few Asian societies. He has been engaged in Care Economy project with Elizabeth King, Maria Floro, Ito Peng and other economists since 2016. He has also worked with time use researchers including Jonathan Gershuny and Oriel Sullivan at Oxford and UCL. He is currently involved in a project with medical professionals, social activists and digital health care companies to build a community-based integrated care system in Korea. He was a president of Population Association for Korea in 2020-2021, and is a vice-president of International Association for Time Use Research until 2027.