The training and development is an important function for the survival of any organization. From an organization point view, training of employees are essential for organization operations and advancement. From an employee point of view training activities is important for skills and development, employee performance and career advancement. The study is based on primary data in particular and secondary data in general. Primary data are collected through questionnaire, supported by personal interview and discussion with the sales managers in life insurance companies. Secondary data are collected by referring to books, journals, magazines, research papers, articles and websites. The study is an empirical survey covering all the districts of Tamil Nadu and 300 sales managers in life insurance companies. The study is based on both the primary data and the secondary data. The result of this research has shown that the factors of training have positive impact on performance of sales managers in life insurance companies. Despite of that, this research has provided precious information and knowledge to life insurance companies about the importance of training in an increasing performance. As a result, it can be concluded that the life insurance companies which provide training to their employees in a proper way can gain substantial improvement in performance and productivity and can deal more number of customers with satisfaction. Training is compulsory for employees to enhance knowledge, skills and abilities that provide extensive support to increase the performance of sales managers in life insurance companies.