Family ownership, nonfamily ownership and Agency costs

The purpose of this research is to review the agency costs of family and nonfamily firms in Tehran Stock Exchange. In conjunction with this research, two questions arise: 1. is there a meaningful relationship between the ownership structural of family and non family firms with agency costs? 2. Do the agency costs of family and nonfamily firms are differ? The research sample, Includes 30 family firms and 30 nonfamily firms and the period of study, covers the years 2007 to 2012. The results show that there is a meaningful relationship between the agency cost based on the ratio of "operating expenses to annual sales" and based on "circulating assets" with the percentage of family ownership. The results also show that no meaningful difference between the agency costs based on the ratio of "operating expenses to annual sales" and the "assets turnover " in the firms of family and nonfamily.