- 2008/04 - Professor, Dept. of Forest Science and Resources, College of Bioresource Sciences, Nihon University
- 2006/04 - 2008/03 Director, Dept. of Forest Microbiology, Forestry & Forest Products Research Institute
- 2003/04 - 2006/03 Research Coordinator, Kyushu Reseach Center, Forestry & Forest Products Research Institute
- 1997/04 - 2003/03 Team leader, Dept. of Forest Microbiology, Forestry & Forest Products Research Institute, Ministry of Agriculture, Forestry & Fisheries
- 1994/04 - 1997/03 Chief, Forest Protection Lab., Shikoku Research Center, Forestry & Forest Products Research Institute, Ministry of Agriculture, Forestry & Fisheries
- 1992/04 - 1994/03 Reseach Coordinator, Agriculture, Forestry and Fisheries Research Council, Ministry of Agriculture, Forestry & Fisheries
- 1988/04 - 1992/03 Senior Reseacher, Lab. of wood decay and mycology, Forest Biology Div., Forestry & Forest Products Research Institute, Ministry of Agriculture, Forestry and Fisheries
- 1977/04 - 1988/03 Researcher, Mushroom Lab., Forest Protection Div., Gov. Forest Experiment Station, Ministry of Agriculture and Forestry
- Nihon University College of Bioresource Sciences, Department of Forest Science and Resources Professor