The government will convene an extraordinary Diet session on Oct. 12, Chief Cabinet Secretary Hiroyuki Hosoda said Tuesday.
The session is expected to run for 53 days through Dec. 3 in line with the ruling parties' plan, although the opposition camp is seeking a longer term.
The ruling coalition is planning deliberations on judicial reform bills, legislation aimed at tackling the declining birthrate and other bills.
The opposition camp is hoping to discuss pension reform and the deployment of Japanese troops in Iraq, because the mission is now scheduled to end in mid-December.
Opposition lawmakers also hope to take up allegations that a Liberal Democratic Party faction hid some 100 million yen in political donations from a dentists' organization.