Ownership structure, agency costs, specialization, and efficiency: analysis of Keiretsu and independent insurers in the Japanese nonlife insurance industry

Notas: This article uses the nonparametric frontier method to examine differences in efficiency for three unique organizational forms in the Japanese nonlife insurance industry-keiretsu firms, nonspecialized independent firms (NSIFs), and specialized independent firms (SIFs). It is not possible to reject the null hypothesis that efficiencies are equal, with one exception