May 13-15 2019, Asst.Prof.Dr.Kowit Nambunmee, a lecturer in Occupational Health and Safety, was invited by School of Public Health, University of Michigan to attend an Occupation & Environment: A Link to Health meeting at Meeting Room 1, Vejvichakarn Building, Faculty of Medicine, Khon Kaen University. The objective of this meeting is to design a Job Exposure Matrix (JEM) for Thai population which will be used to estimate an attributable risk from occupational carcinogen exposure. It would be advantage to understand head and neck cancer mechanism in occupational setting. This meeting is an activity under the Memory of Understanding between Mae Fah Luang University and University of Michigan.