This paper investigates the effect of Human Resources Management (HRM) functions and implementation in the construction projects performance in Egypt. This study introduced the concept of HRM in general and in the construction projects in particular. Four key performance indicators namely: quality, quantity, time, and cost were used to evaluate the performance of the construction projects. Data were collected from 55 construction firms using questionnaire and interview techniques. The collected data were analyzed using the SPSS package. The analysis results revealed that there are strong relationships between human resource management factors and construction projects performance specially team work factor, and motivation factor so that a technique was developed to improve project overall performance for firms that do not apply human resource management systems.