On the Cost Structure of the Japanese Property‐Casualty Insurance Industry
研究了1980至1995年间日本财产意外保险公司的规模经济与范围经济，发现日本本土及外资公司均存在显著的规模经济，且日本公司与多数外资公司在“第三领域”产品与其他险种间存在范围经济。
Abstract This article tests economies of scale and economies of scope for the property‐casualty insurance companies in Japan. We fit a composite cost function to a set of Japanese firms over the period from 1980 to 1995 and employ an error components model. Our main findings are as follows. First, statistically significant economies of scale are observed in both Japanese firms and foreign firms operating in Japan. Second, economies of scope are also statistically significant for Japanese firms and most of the foreign insurers between the “third sector” products and the rest of the property‐casualty insurance lines.