The Occupational Health Medical Control Program (PCMSO) from the Universidade Federal do Triângulo Mineiro has as its main directives the prevention, tracking and advanced diagnosis of work-related healthinjuries. This study aims to describe worker enrollment in the program, according to environmental risks. A retrospective analysis was conducted using secondary data registered in the PCMSO. According to it, 3,078 workers were summoned from 2005 to 2006, of which 52.05% did not attend periodic examinations. The greatest percentile of workerswho did not attend was related to physical and biologicalrisks (56.78%). The simple fact that the PCMSO sets environmental risks for each worker does not necessarily translate into program affiliation. It is necessary to establish more persuasive approaching mechanisms for the worker, in order to contribute to their well-being.