Purpose: This study aims to find out the impact of the supervisor’s leadership style as well as the sales’ agents personality traits on sales performance in a life insurance company in Lebanon. Design/ methodology/ approach: The Multi-Factor Leadership Questionnaire (5X-Short) was adopted to assess the supervisor’s leadership style and the Mini-IPIP Questionnaire to assess the sales agents’ Big Five Personality Traits. The questionnaires were distributed to 200 sales agents.SPSS was used to analyze the data. Statistical tools such as analysis of variance (ANOVA) and regression analysis were ...