The training of the workers in the enterprises allows the development in the skills and knowledge of the employees. As the other Enterprises, the training programs in the petroleum companies got a great importance, which became more cleared through this study. Through the case study on Sonatrach subsidiary employees, and based on selfquestionnaire our paper aims to analyze the training programs contribution in the improvement of the unit productivity level, and on the upgrading of the profitability and efficiency of the workers. Nevertheless, the importance of the training contribution appears undoubtedly in minimizing the lost days caused by the work accidents, which is a huge costs organization must cover Although the luck in decreasing in the rates of this accidents.