The current Japanese unemployment rate is 4.7%.
However, I would caution against using that as a long-term indicator; like the U.S. number, it is more indicative of the short-term hiring situation rather than useful for long-term numbers. Both the U.S. government and the Japanese government have very long explanations about how they calculate these numbers.
I personally prefer participation rates; I like both the normal definition, and as well I like to use the overall population in light of the demographic situation we are seeing develop.
What do you think of my idea that Japan's planning hasn't worked out so well over the last 15 years?