The main objective of this dissertation was to investigate the roles of job crafting actions and psychological safety in preventing burnout symptoms. For this, two studies were conducted. The first study consisted of a theoretical review of the relationships between job crafting, psychological safety and burnout, considering the impact of interaction between professionals from different generations in the work environment. The second study consisted of proposing a model in which job crafting actions play a mediating role in the relationship between psychological safety and burnout symptoms. A quantitative study was carried out, based on the application of assessment scales of psychological safety, job crafting actions and burnout symptoms and from questionnaires answered by a sample of 179 workers in the chemical, petrochemical and oil and gas sectors. Through the obtained results, a model was proposed in which the cognitive crafting actions played a partial mediation role in the relationship between psychological safety and the primary symptoms of burnout. Such results reinforce the importance of developing actions aimed at training teams and leaders in psychological safety issues and identifying opportunities for job crafting.