Background: A lot of evidence of crisis in authentic leadership in almost all sectors of organizational and professional life of such as great embezzlements in organizations, financial bad performance, employee abuse, ethical corruption, aggressive and Illegal marketing activities, ethical scandals of the leaders and therefore distrust to leadership in organization and social has increased importance and necessity of the authentic leaders. The aim of this study is investigate the effect of supervisor's personality traits (conscientiousness, agreeableness and neuroticism) and ethical context on authentic leadership of with mediating role of leader-member exchange.

Methods: This research is descriptive and correlation design Statistical society was employees of Bidboland gas refinery So that sample was selected from 209 persons of them were selected by simple random method. Data were gathered by personality traits (NEO-FFI), ethical context, leader-member exchange, authentic leadership scales. Data analyzed by Pearson correlation structural equation modeling and bootstrap method.

Results: Results indicated that personality traits and as well as ethical context in organization has considerable impact on improve leader-member exchanges and also followed trustworthiness leaders.

Conclusion: managers and organizations leaders must be develop honest and trusting relationships in a work environment and to adjust organizational decisions and policies in line with self-actualization of and employees increase productivity.