The perception of organisational justice is dominant in people's lives and organisations as well as being a predictor of workers and organisations' success. Indeed, the relevant attitudes and behaviours at work depend, essentially, on judgments about organisational fairness or unfairness. In this study, we will seek to better understand this impact, directly or indirectly, on behaviours and attitudes. The overall results of this study are of much interest to managers as they provide a more comprehensive understanding of the organisational aspects, with a focus on the organisational justice, affecting employee attitudes and behaviours. According to these results, it is possible to design Human Resources Management (HRM) strategies and policies leading to organisational success. With this knowledge, organisations should invest in leaders who believe in the transparency of processes, the need for good quality interpersonal relationships, good communication, and the importance of attending the socio-emotional needs of employees. Preventing the emergence of burnout will give effectiveness and predictability to HRM practices.