Summary This document summarizes the main findings of a study that assessed various critical incident (CI) management and employee support protocols in the railway industry in order to: raise managers’ awareness of the potentially negative effects of critical incidents on locomotive engineers and train conductors in the rail industry and other transportation industries; share recommendations with them regarding the best critical incident management and employee support practices; inform them of the benefits of strictly applying a critical incident management and support protocol (CIMSP). This document is intended for: managers in railway companies; professionals responsible for managing critical incidents and providing employee support, and teams responsible for employee assistance programs for railway companies; personnel in charge of training in railway companies; locomotive engineers and train conductors; agents working in railway operations centres; unions; managers and personnel involved in peer helper programs; occupational health and safety committees in railway companies. This document may also be of interest to other industries, including: public transit operators in urban and rural areas (metros, trains, buses); road freight transportation companies; industries in which transportation plays a significant role (e.g.: mining, processing industries, marine transportation).