In this work, which follows a quali-quantitative methodology, we explored train conductors' sources of restlessness and the relationship between work environment stressors and health of those conductors from urban zones. Firstly, observations and interviews to key informants and conductors were done. Secondly, a group of conductors were asked to complete the following instruments: Occupational Stress Inventory (OSI, Osipow and Spokane, 1987; adaptation: Schmidt, Leibovich, Schufer, Gonzalez and Marcomi, 2003), General Health Questionnaire (GHQ, Goldberg and Williams, 1996; Spanish version: Lobo and Muñoz, 1996) and a Socio-demographic and a Work Questionnaire (elaborated by researcher group). Data were analyzed with quali-quantitative methodology. Main sources of restlessness from this population were identified as well as the possible impact these sources have on workers health.