Resumen
The first part of this research shows that in the works of shafts and tunnels construction, incidents and accidents are mostly caused by factors involving directly the workers behavior, even when the work safety conditions have been provided completely. The research is based on the data collected during two years in the construction of a deep drainage system in the Mexico City, which was carried out by four major Mexican construction companies. This research was developed from by external project monitoring, which allows using representative data without the problem of affect or benefit participating companies. Considering that the construction of the project will require three more years, the second part of the research aims to develop and implement a plan of labor risks prevention (LRP) based on the behavioral intervention of workers, in order to minimize the presence of accidents at work.Rev. ing. constr. [online]. 2011, vol.26, n.2, pp. 171-186. ISSN 0718-5073. http://dx.doi.org/10.4067/S0718-50732011000200003