SUMMARY
This article aims to investigate the effects of three practices of human resource management (training, recruitment and compensation) on the success of projects measured by using the perceptions of project managers on parameters such as cost, time and quality (project efficiency) with those completing their projects. This study was conducted on 108 companies based on projects in the municipalities of Tampico and Victoria registered in the National Statistics Directory of Economic Units with a non-probability convenience sampling. This study is key for researchers and professionals as it seeks to contribute to the theory of critical success factors (CSF) and confirm the human resources management (HRM) as one of them, which helps projects managers to improve the implementation of their projects, thus obtaining greater chances of success in their projects. The results of this analysis show the positive impact of training and compensation on the efficiency of projects. This has important implications for managers of these types of businesses who show interest in increasing the efficiency of the projects they carry out, given that not all elements assessed have the same effect on the results.