This blog post continues my exploration of the available productive resources in Japan which would allow a nominal fiscal expansion to be accommodated without adding to the inflationary pressures. People consistently point to the low official unemployment rate as a proxy for a shortage of labour in Japan. It is good that the official unemployment is consistently low and that is a good thing. But the official rate might not be a very good indicator of the degree of labour market slack, especially as Japan has endured many years of low economic growth and falling real wages. A focus on underemployment probably provides a better guide to the availability of idle labour resources. That is what I consider in today’s instalment.