The current research has been conducted to design a model to create a suitable platform for the preservation and maintenance of human capital and increase the productivity of the organization in the central building of Iran Oil Company. The statistical population of this research consists of two groups, the first group includes experts who are familiar with the theories of human capital preservation and organizational productivity, whose number is unknown and are scattered throughout the country, and their selection was selective and in This research has been used in the design part of the model according to them, the second group included all the employees of the central building of Iran Oil Company (582 people), according to Cochran's formula, 232 of them were selected as a sample. To collect data, questionnaires on human capital maintenance and organization productivity were used. The results indicate that there is a significant relationship between the maintenance of human capital and the productivity of the organization in the central building of Iran Oil Company. There is a significant relationship between individual factors, organizational factors, managerial factors, and job factors with organizational productivity in the central building of Iran Oil Company.