The Finance Ministry released data Wednesday showing the trade deficit soared nearly 38 percent last month compared to November the previous year.
November exports stood at 4.98 trillion yen ($59.3 billion), while imports totaled 5.94 trillion yen ($70.7 billion), making for a deficit of 953.4 billion yen ($11.4 billion).
Japanese companies are moving production abroad to compete globally. Exports to China plunged following a territorial dispute that set off anti-Japanese sentiments and a boycott. Energy imports have shot up since the nuclear disaster.
The political party that made a comeback in Sunday's election is making economic revival a priority, promising public spending and an inflation target.