Ippei has been managing programs and providing technical support to social security reforms at the country level in Indonesia, Viet Nam and Myanmar, and also contributing to research and knowledge management at the ASEAN regional and global levels. He has been involved in various policy discussions and research activities on unemployment benefit, old-age, invalidity and survivors’ benefits, maternity benefit, sickness benefit, and the extension of social protection to workers in the informal economy. He has worked at the ILO Country Office for Indonesia and Timor-Leste, the Regional Office for Asia and the Pacific and the Social Protection Department; and JICA Washington D.C. Office, Research Department, Country Office for Kenya, and Africa Department for Kenya, Nigeria and Somalia