Medical screening and monitoring have a long and varied history as part of the insurance industry's safety and health relations with its policyholders. Many workers' compensation insurance carriers have assisted policyholder management in understanding the requirements of cost-effective health programs, in planning and undertaking steps necessary to comply with state-of-the-art medical practices, and in locating knowledgeable physicians to supervise employee health systems. Managing employees' health and associated records has become, for many employers, a complex operational and regulatory problem because of the amount and type of health information being collected. Administration of group health and accident insurance plans, workers' compensation, treatment for the ill and injured employees, voluntary health screening and counseling programs, preplacement and periodic physical examinations, and control mechanisms for health hazard exposures all contribute to this huge pool of acquired and stored health information.