Professor Yokoyama is the Dean of the Graduate School of Business Administration, Toyo Gakuen University, Tokyo, Japan, where she supervises research in the field of human resource management in Japanese companies by drawing comparisons between Japanese-style employment management and the merit-based systems. Her recent research is concerned with Japanese self-initiated expatriate entrepreneurs working in Southeast Asia, where she conducted researches, visiting Hong Kong, Thailand, Cambodia, Myanmar, Indonesia, China, Vietnam and the Philippines. Her recent publications include Working in South-east Asia, Pelican Publishing Co., 2017 and Yokoyama K. & S. L. Birchley (2018). Mindset and Social Entrepreneurship, Journal of Entrepreneurship and Innovation in Emerging Economies, Vol 4, Issue 1, pp1-21, SAGE Publications. In her early career, Yokoyama worked a total of nine years in the UN Organizations, for Employment Department in ILO, Geneva, African Bureau of UNHCR, Geneva and Personnel Division of FAO, Rome.
