Through a sample survey of employers, the Survey of Occupational Injuries and Illnesses (SOII), BLS generates annual estimates of nonfatal occupational injuries by variables such as industry, source of injury (e.g., a motor vehicle), body part(s) injured, age, and median lost work days. SOII provides little incident-level detail that can help to guide MVC prevention initiatives. Further, because SOII does not cover certain worker groups such as agricultural workers on farms with fewer than 11 employees and the self-employed, it undoubtedly underestimates the number of work-related MVCs and other events.