Prime Minister Malcolm Turnbull says parliament must vote to end the "lawlessness" in the construction sector that is costing the economy billions or Australians will go to an early election.
Federal MPs and senators are heading back to Canberra for this week's special sitting to vote on key legislation to restore the Australian Building and Construction Commission and the registered organisations bill.
Mr Turnbull said on Sunday the government had made it very clear that if the ABCC bill was rejected by the Senate for a second time, then both houses of parliament would be dissolved and an election held on July 2.
"The lawlessness in the construction sector has intensified since Labor took the tough cop off the beat," Mr Turnbull reporters in Canberra on Sunday.
Over 100 officials from the CFMEU are before the courts on 1000 charges for breaking industrial law, he said.
