Work organization hazards are stressors that occur in the work environment. They can be physical or emotional. Some examples are excessive workload, incompatible work facilities, and improper working methods. These stresses can result in illness and death.There are many ways to measure the exposure of workers to work organization hazards. One method is the job exposure matrix (JEM).  geofence The JEM is a cross-tabulation of workplace hazards and the occupation title. This is used in risk assessment and epidemiological studies.Other work organization hazards include psychological job demands, effort-reward imbalance, and job insecurity. Many JEMs have been developed using large national survey data. However, there are important methodological issues to consider before a high-quality JEM can be created.A new JEM of work organization hazards will be developed based on recent national survey data. It will incorporate detailed occupational codes that will be linked to clinical data and national registry data. In addition, a user-friendly website will be built to facilitate the creation of new JEMs.Using this approach, the proportion of total variance in work organization hazards will be measured separately for men and women. Analyses will be repeated with weighted GSS-QWL data. With this new data, the proportion of total variance in work organization and other types of hazards will be determined. R2 values will be obtained using 2010 six-digit SOC codes.Occupational epidemiological studies are important in determining the combined contributions of multiple worksite hazards. In addition, individual health factors can influence individual health risk factors.