The objectives are to determine attitudes and beliefs among construction workers and supervisors related to taking action to reduce musculoskeletal injuries (MSIs). “Action” stage of change was confirmed if workers in the last 6 months are continuing to take steps to reduce MSIs. Surveys (520 workers; 35% and 171 supervisors; 67%) revealed that more workers are concerned about MSIs (p<0.05) and are taking action to reduce MSIs (p<0.05) than supervisors. Workers taking action tended to be younger and less experienced than other workers (p=0.00). The final multivariate model showed those workers taking action were more likely to be mechanics and general laborers, to have experienced pain within the last week, to be involved in health and safety, to feel that changes aimed at reducing MSIs would be effective, and that injuries are due to adverse work conditions rather than with characteristics of individual workers. This information can be used to target ergonomics interventions in this industry.