PurposeThe objectives of the current study were to identify the antecedents and outcomes of authentic leadership. For antecedents, the research considered the HEXACO (Honesty-Humility, Emotionality, eXtraversion, Agreeableness, Conscientiousness, Openness to Experience) personality model and thereby identified the impact of authentic leadership on employee performance with the mediating role of psychological safety and employee engagement by using the trait theory.Design/methodology/approachThe current study adopted a positivism research philosophy followed by a deductive approach. Overall, 347 samples were collected from the public sector organizations using quantitative research techniques, and data were gathered through a self-administrated questionnaire. Exploratory and confirmatory factor analyses were used through structural equation modeling (SEM)-Mplus to generate the results and test the formulated hypotheses.FindingsThe results revealed that honesty-humility significantly impacts authentic leadership (β = 0.094 and p < 0.05). Similarly, other dimensions of HEXACO also play a significant role in forming authentic leadership. After analyzing the HEXACO as the antecedent of authentic leadership, sequential mediation of psychological safety and employee engagement was checked and identified that authentic leadership in the presence of mediators was insignificant. Hence the full mediation has been recorded.Originality/valueSince its inception, a plethora of research has been available on the authentic leadership theory. However, the empirical evidence revealed that most research is related to outcomes of authentic leadership. As far as antecedents of authentic leadership are concerned, the literature is still silent, specifically on the development of authentic leaders. The current study is significantly contributing to the theory of authentic leadership, and in this context, the study is unique since it is taking the HEXACO personality model as an antecedent of authentic leadership to investigate its role in the development of authentic leaders. Moreover, the study is also identified as the impact of authentic leadership on task performance, not in isolation, but by taking psychological safety and employee engagement as a mediating mechanism.