The purpose of this study is to analyze the relationship between the consistency of the human resources performance management and engagement at work, mediated by organizational justice, in a Brazilian Federal Public Autarchy. The research was carried out through a survey applied to a single Entity. The findings show that system consistency and organizational justice are predictors of work engagement. Organizational fairness plays a mediating role, which influences the relationship between system consistency and work engagement. The results show the importance of system consistency in the public sector and confirms that official’s behavioral factors have a significant part in the search for better organizational results.El objetivo del estu...