In today’s corporate world, there has been so much emphasis on pride and personal achievement at the work place thus the concept of teamwork seems to be overlooked by managers and employees. In view of this management sees less essence of teamwork as a major tool of performance which has led to poor performance and productivity in the industry market. This study therefore seeks to identify the impact teamwork has on organizational performance. The objective of this study is to identify factors associated with teamwork, identify the positive or negative effects of teamwork on employees and to examine the impact of teamwork on the overall organizational performance. Guided by the quantitative research methodology, convenience sampling technique was used to select lower level employees whiles purposive sampling technique was used to select managers (higher level employees) of MTN Ghana. A self-structured questionnaire was employed in the data collection.