Japan's industrial output fell 3.1 per cent in seasonally adjusted terms in March, compared to the previous month, the government said Wednesday.
The March figure was lower than the average market forecast of a 0.8-per-cent drop and the largest fall since January 2003, the dpa reported.
The production data at mines and factories stood at 106.8 against 100 for the base year of 2005, the Ministry of Economy, Trade and Industry said.
The Cabinet Office earlier assessed Japan's economic recovery as having lost its momentum.
The production from manufacturers was expected to decline 0.3 per cent in April but go up 3.4 per cent in May, the ministry said.