"We are in the middle of a technical recession" of two consecutive quarters of contraction, Hiromichi Shirakawa, said chief Japan economist at Credit Suisse Group AG in Tokyo.
The Nikkei 225 Stock Average tumbled 0.83 per cent, or 72.99 points, to 8,764.16. The broader Topix Index retreated 0.57 per cent, or 4.21 points, to 731.14.