The unemployment rate in Japan was last reported at 4.5 percent in October of 2011. From 1953 until 2010, Japan's Unemployment Rate averaged 2.60 percent reaching an historical high of 5.60 percent in July of 2009 and a record low of 1.00 percent in November of 1968.
Although unemployment increased compared to the past, seems pretty good to me compared to the USA and some EU countries.
Source: http://www.tradingeconomics.com/japan/unemployment-rate