The Iranian life insurance market is among the less developed markets in the world. We consider the share of life insurance in Iran and reveal its low share in comparison with global average. There are some studies conducted to unravel this phenomenon, but few or no comprehensive model has been proposed so far. In order to have a comprehensive framework, we use an institutional approach to identify and resolve this issue. By using an institutional approach, we are able to find out the most significant factors explaining the position of Iranian life insurance in the world.The main purpose of this research is to identify the most relevant institutions such as law, regulation, supportive businesses, and etc. that explain the life insurance market in Iran. In order to have a benchmark, we first study institutions of life insurance in the U.S.A. and India using Williamson's 4-levels of social analysis, and then based on our findings we develop a model to conduct the field research in Iran. Finally, the collected data from interviews are analyzed through open and axial coding methods in order to find the most significant institutions that should be modified or established in Iran.The main findings of our research identifies the institutions and effective organization in countries studied in this paper, institutions that reduce information asymmetry between insurer and insured, businesses that are capable of outsourcing, strategies for implementing institutions or essential organization in Iran insurance industry. Finally some practical recommendations for policy making are made.