- Food safety policy and regulations
- Control of Food-borne pathogens
- Risk assessment and communications

1995.04-1999.02 Head Researcher, Korea Institute of Health Care Management
1999.03-2003.02 Head Researcher, Korea Health Industry Development Institute (KHIDI)
2003.03-Present Professor, School of Food Science & Technology, Chung-Ang University
2003.01-2021.12 Vice President, Korean Society of Food Hygiene and Safety
2010.02-Present Honorary Field Researcher, National Institute of Agricultural Sciences, Rural Development Administration
2016.02-Present Vice President, Korean Institute of Food Safety
2018.05-Present President, Agricultural Products Safety and Hygiene Research Association
2019.03-Present Vice President, Consumers Korea
2021.04-2023.04 Non-permanent executive director, Korea Agency of HACCP Accreditation and Services
2022.02-Present Director, Korea Food Safety Research Institute

2007 Pojang National Award of President
2007 Academic Progress Award of Korean Society of Food Science and Technology
2021 Academic Award of Korea Food Industry Association(KFIA)