This study tried to know a little better the professional life of the urban bus drivers in the city of Rio de Janeiro. Firstly, a brief historical revision was done about the bus and the urban bus driver professional. Then, main information about human, physical and psychic costs where presented. A problematization, as part of Ergonomic Appreciation was performed to question about the major problems of bus drivers in their workstations. In this phase, drivers from a specific bus enterprise in Rio de Janeiro were studied. The research hypothesis was that the repetitive movements leas the bus driver to an inadequate posture, that can result in permanent physical constraints, that can stimulate dissatisfaction in professional performance. A postural evaluation was carried out, joined to questionnaires that tried to evaluate emotional reactions; thinking disturb; behavioral changes; positive reactions and sensations and attention of the bus drivers during their task, aiming to validate the hypothesis. The hypothesis was confirmed, when related to the postural change: major of the evaluated bus drivers have the right shoulder depressed if compared to his left one, and head inclined to left, forward, and feel pain in these body parts. On the other hand, the bus drivers affirm that like their work, and circa of 98% of the subjects answered that they enjoy their job. The fact of the bus drivers likes their job minimize the psychological erode of the profession, but can t reduce the physical problems associated to her.