Tokyo, May 29: Leaders of the main conservative opposition Liberal Democratic Party and their smaller ally the New Komeito party on Friday threatened to put the motion to vote against Kan, AFP reported Sunday.
The opposition has rejected calls to join the Japanese premier in a national unity government.
Kan is under fire over his handling of the response to the March 11 earthquake, tsunami and the subsequent nuclear disaster in the Asian country.
If the motion is passed, the prime minister will have to either resign or call a snap election.
Following the disaster, Kan shut down a second quake-prone nuclear plant southwest of the Jpanese capital, Tokyo, the Hamaoka plant.
But the premier’s critics have criticized his handling of relief efforts and the slow pace of building temporary new homes for tens of thousands made homeless by the monster tsunami that hit the northern Pacific coast.
On March 11, a destructive 9-magnitude earthquake and an ensuing tsunami struck Japan’s northern coasts, setting off a nuclear crisis by knocking out power to cooling systems of reactors at the Fukushima plant and causing a radiation leak.
The powerful quake and the massive tsunami that followed killed about 24,000 people and ravaged the Fukushima plant. The crisis has displaced about 80,000 residents from around the plant.
—-Agencies