Raphael Edem Ayibor is currently a lecturer at the Department of Economics, KNUST, Ghana. Raphael obtained his Doctor of Philosophy (Ph.D) degree in Economics and Master of Arts in Public Economics from the National Graduate Institute for Policy Studies (GRIPS), Tokyo, Japan. Furthermore, he holds Master of Philosophy and Bachelor of Arts in Economics both from the University of Cape Coast, Cape Coast, Ghana. His research interests are in the areas of Health Economics, Public Economics, Economics of Education and Sanitation. He teachers Economics courses both at the graduate and undergraduate levels. Recently, he have been studying the impact of access to improved sanitation on health, education and labor market participation in Ghana.