Japan and insurance: losses to reinsurers will undoubtedly be large, but it will be mitigated by the realities of the Japanese earthquake insurance system. Consider this simple fact: only 18.5% of Japanese households have earthquake insurance.

In an earthquake-prone country, how is that possible? Because coverage is optional, and because most Japanese households apparently have concluded that: 1) the price is high considering the meager coverage (a minimum of 30 percent and a maximum of 50 percent of insured value, up to a maximum of 50 million yen, or $617,000), and 2) the government will backstop them.