This two-year project is to identify the root causes of safety and health disparities that are emerging in the construction industry. This study will target Hispanic construction workers, with a special emphasis on new immigrants and those employed in low-skill and high-risk occupations. Several nationally representative data sources will be used for the data analysis, including the Survey of Income and Program Participation (SIPP), the Collaborative Psychiatric Epidemiology Surveys (CPES), and a set of the National Surveys of Latinos (NSL). Hypotheses generated from our previous studies will be tested with rigorous statistical methods. Discrimination, health behaviors, and work organization factors that may be leading or lagging to safety and health disparities among construction workers will be investigated for the first time. Findings from this study will serve as a guide for targeted interventions of vulnerable subpopulations within the construction industry.