The development of a company requires the development of its human resources. Research has shown that overall performance is measured not only by the economic dimension but also by the social dimension and actions on development processes, in particular, the continuous training process which is the constructor of adequate skills for improvement. The below analysis will be divided into two axes: The first axis aims to define the overall performance through a review of literature. It demonstrates a relationship between the individual’s performance and continuous training as a process of individual development, and cites some performance measurement tools. The second axis examines the literature following specific inclusion criteria, its impact on overall performance, and highlights existing assessment models.