Purpose: The present study was conducted to model the problems of the system of recruitment, retention and training of human resources by the mixed exploratory research method. Methodology: The statistical population of the qualitative part included a number of experts including the senior managers of National Iranian Oil Refining and Distribution Company (NIORDC) and human resource management professors in higher education centers; and employees of the NIORDC (Sari) and Iranian Oil Pipelines and Telecommunication Company (IOPTC) (North) in the quantitative part, n= 835 (789 men and 46 women). In the qualitative part, by the snowball sampling method, 20 people, and in the quantitative part, by relative stratified sampling method based on Cochran's formula, 263 people were selected as the statistical sample. In the qualitative part, the data were extracted by the Delphi technique and semi-structured and structured questionnaires; and the 120-item researcher-made questionnaires in the quantitative part and analyzed using SPSS and AMOS. The content and construct validity of the questionnaires was confirmed. Reliability and composite reliability (CR) were also confirmed by Cronbach's alpha coefficient 84%. Descriptive statistics (mean, variance, and standard deviation) and inferential statistics (exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) and Friedman test) were used for data analysis. Findings: The results showed that the model of problems of the system of recruitment, retention and training of human resources has 6 organizational (internal), environmental (external), occupational, individual (personal), governmental (political) and cultural-social dimensions and 30 components. Conclusion: The results of the quantitative part showed that all dimensions of the research model were confirmed.
