Maritime as a profession is characterized by frequent and long-term separation from family, work in an environment that is also a living space, which is also hierarchically strictly regulated. This research was prompted by a lack of quantitative research on the relationship between emotional intelligence, justice in an organizational context, and occupational stress in seafarers. The aim of the study was to examine the role of emotional intelligence and justice in an organizational context in explaining the experience of stress in seafarers. The survey involved 177 seafarers, who filled out an online questionnaire, which, in addition to sociodemographic questions, included the Emotional Competence Questionnaire, the Scale of Justice in the Organizational Context and the Scale of Stress on Board. The results showed that participants reported on average relatively high levels of emotional intelligence, slightly elevated levels of stress on board, while justice in the organizational context was assessed as moderate. The difference was found between the perceived justice of the manager and the work organization, whereby the manager was perceived as more just. Significant negative associations of stress on board with emotional intelligence and overall justice, as well as with the justice of the manager and the justice of the work organization, were found. Multiple regression analysis indicated that emotional intelligence, managerial justice, and work organization justice explain 11.90% of the variance in the experience of stress, with perceived work organization justice proving as the only significant predictor. The findings of the study indicate the importance of further research on emotional intelligence and justice in the organizational context in the research area of occupational stress in seafarers, but also provide some guidelines for intervention strategies in this area.