The government is forcing the Senate to sit until a vote is taken on its climate action plan.
The move comes a day after the government won the backing of the Palmer United Party and other crossbench senators for its Direct Action policy.
The government has agreed to retain the Climate Change Authority, which will complete an 18-month investigation into an emissions trading scheme.
In return, the coalition gets PUP's crucial Senate votes for its $2.55 billion Direct Action plan.
Independent Senators John Madigan and Nick Xenophon will also support the coalition after the government agreed to safeguards in its legislation.
The Greens and Labor says the move to force a vote is an abuse of parliamentary process.
"There should not be this threat put to the Senate," manager of opposition business in the Senate Claire Moore told parliament.
The Senate will not adjourn on Thursday until a vote is taken.
