INTRODUCTION: This study aimed to investigate the influential factors and the consequences of managers’ growth in the Red Crescent Society of Tehran, Iran. METHODS: This is a practical quantitative and qualitative study. The statistical population in the qualitative part of the study included experts and specialists (n=20) working in the Red Crescent Society of Tehran, Iran, who were selected using a non-random sampling method and interviews. The quantitative part of the study included 257 employees working in the Red Crescent Society of Tehran, of whom 152 were selected using a random cluster sampling method. FINDINGS: According to the results, seven factors were recognized as the requirements for designing the maturity model of the managers of the Red Crescent Society in Tehran. CONCLUSION: Based on the obtained results in this study, organizational factors were considered causal conditions, which consisted of seven components (managerial, structural, organizational culture, organizational training, organizational justice, organizational sociability of managers, and psychological contracts of managers with the organization). Moreover, five effective dimensions of managers’ growth led to employees’ participation, employees’ commitment, the organization’s productivity, the organization’s performance, and the manager’s self-efficacy.
