| Title | Department and Organization | Date |
|---|
| Distinguished Investigator & Director | Center for Neuropsychiatric Research, National Health Research Institutes | 2020.1 - Present |
| Distinguished Professor | Department of Public Health & Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University | 2010.8 - Present |
| Dean | College of Public Health, National Taiwan University | 2011.8 - 2017.7 |
| Acting Director | Master of Public Health Degree Program, College of Public Health, National Taiwan University | 2009.8 - 2011.7 |
| Acting Director | Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University | 2008.8 - 2011.7 |
| Associate Dean | College of Public Health, National Taiwan University | 2005.8 - 2011.7 |
| Chairman | Department of Public Health, College of Public Health, National Taiwan University | 2005.8 - 2011.7 |
| Director | Institute of Epidemiology, College of Public Health, National Taiwan University | 1998.8 - 2004.7 |
| Acting Director | Institute of Epidemiology, College of Public Health, National Taiwan University | 1997.8- 1998.7 |
| Professor | Institute of Epidemiology, College of Public Health, National Taiwan University | 1997.8 - 2010.7 |
| Associate Professor | Institute of Epidemiology, College of Public Health, National Taiwan University | 1993.8 - 1997.7 |
| Lecturer | Institute of Epidemiology, College of Public Health, National Taiwan University | 1993.2 - 1993.7 |
| Post-doc Fellow | Department of Epidemiology, School of Public Health, Harvard University | 1992.7 - 1993.1 |