Purpose: The aim of the present study was to identify and explain dimensions, components and indices of human resource development in Sama organization. Methodology: The study method was applied in terms of purpose, mixed (quantitative-qualitative) exploratory in terms of data type, and descriptive-correlational survey in terms of data collection time. The statistical population in the qualitative part included the academic experts and officials from the Sama organization (chairmen and assistants, human resources department, human resources experts, assistants in the units, human resource officials in the units), among them, 15 people was selected as the sample size using judgmental sampling method based on the theoretical saturation principle. The statistical population in the quantitative part included all staff of Sama organization, whose number was 2898 (2223 permanent employees and 675 temporary employees). Out of this number, 391 persons were selected as the sample size using multistage random cluster sampling method. Findings: In this research, the data obtained from the qualitative part were analyzed through content analysis, and the collected data in the quantitative part, according to the research questions, were analyzed through descriptive (mean, standard deviation, tables, etc.) and inferential statistics (structural equation modeling, exploratory factor analysis and one-sample T test) using Spss and Lisrel software. Conclusion: The results showed that empowerment, job performance and improvement are the elements of human resource development in Sama organization. Also, given to the proposed mechanisms, facilitators and barriers, a model with appropriate fit was designed
