The concept of employees' job satisfaction has been momentous throughout these past years to the development and accomplishment of organizations' goals and objectives. Moreover, the telecom industry has an important role to play in the underpinning of a country's economy. The aim of this study was to investigate and a clearer view of the level of relationships that exist between the four Leadership behaviours as to be Supportive, Directive, Participative and Achievement-Oriented was satisfaction of employees in the Telecom companies; Tigo Chad and Airtel Chad in N'Djamena. To measure these relationships, deductive research based on survey has been conducted. A sample size of 100 respondents has been taken for the research, and primary data collected through Internet from the participants, using cross-sectional Time Horizon; and analysed using SPSS. The results showed a positive relationship between Supportive, Directive, Participative and Achievement-Oriented leadership with employees' satisfaction, while directive leadership behaviour has been shown to be less significant to the employees' satisfaction in the Telecom industry. The findings have also significantly contributed to the advancement of knowledge in employee performance. The paper's primary contribution is that it provides an understanding that most effective leadership style in a large business organization in a third world economy.