Risk Sharing Mechanism in Japan's Auto Industry: The keiretsu Versus Independent Parts Suppliers

This study investigates (1) whether risk sharing behavior of subcontractors has changed over the two decades (1973–94); (2) whether there are any differences between keiretsu firms and independent firms in sharing risk; (3) how ownership of its parts-suppliers through minority shareholdings by automakers or sending directors to parts-suppliers affects the suppliers' risk sharing behavior. Empirical results support the risk-sharing hypothesis in general. The keiretsu firms are more risk averse than independent firms in the first period (1973–85). In the second period (1985–94) independent firms become more risk averse than keiretsu firms. This may suggest that the keiretsu system would work as a shock absorber in an unfavorable business environment.

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