Drs. Linda McCauley, Joan Rothlein, and Gary Rischitelli are engaged in a collaborative project with the Oregon Department of Health and Human Services and Oregon Workers' Compensation (WC) insurers to identify injury trends and opportunities for prevention. Currently, Oregon WC data only includes work-related injuries and illnesses that result in more than three days of work loss ("time-loss" injuries). WC insurers, however, also maintain databases of employees who are injured but return to work within three days ("medical-only" cases). This project has now merged WC claims data from multiple insurers and employment information from the Oregon Department of Employment into a single database that contains both "time-loss" and "medical-only" claims involving ergonomic injuries, stress-related claims, neck and spinal injuries, and dermatitis. Ergonomic injuries, often described as "musculoskeletal disorders," include sprains, strains, carpal tunnel and other disorders involving repetitive motion, overexertion, bending, twisting, and related bodily actions. More than one-quarter of the claims from 2000 and 2001 in this database were identified as "ergonomic disorders" and more than 65 percent of these were "medical-only" claims. The industries with the largest numbers and the highest rates of "medical-only" claims differ from those industries with the highest numbers and rates of "time-loss" claims. These findings suggest raising the priority on the development of prevention programs for those industries with high "medical-only" claims.