The health of the contractor work force is a corporate responsibility of the Department of Energy (DOE). DOE strives to ensure that work is safely conducted at every site. Collecting and analyzing information on illness and injury is a good way to evaluate how safely work is being performed across the complex. Illness and Injury Surveillance monitors and assesses the overall health of the current work force, with the goal of identifying groups that may be at increased risk of occupational illness and injury. In addition, health outcomes related to aging and lifestyle choices which impact the health of the work force can be identified. Surveillance identifies opportunities for site safety and health managers to apply intervention strategies to reduce illness and injury across the DOE complex. The Illness and Injury Surveillance Program began as a pilot project in the mid 1980s. The pilot project became a DOE Headquarters based program in 1990.