Opposition lawmakers have called on parliament to reconsider its decision not to classify a motion seeking scrutiny of the government's 400-billion-baht loan programme as an urgent matter.
It says spending under the scheme is due to begin next Monday.
During a House meeting chaired by House Speaker Sophon Zaram, Sirikanya Tansakun, a party-list MP from the opposition People's Party (PP), asked Mr Sophon to review the ruling on a motion proposed by PP leader Natthaphong Ruengpanyawut.
The motion would set up a special parliamentary committee to monitor projects and budget spending under the 400-billion-baht emergency loan decree issued to address the energy crisis and support the energy transition.
Ms Sirikanya argued the issue should be treated as urgent because the government planned to begin disbursing funds for projects from next Monday and had not suspended the move pending a Constitutional Court ruling on the legality of the decree.
She said parliament had previously treated a motion related to the Land Bridge megaproject as urgent and urged the House to apply the same standard.
In response, Mr Sophon said he had followed parliamentary procedures based on recommendations from House officials responsible for reviewing the agenda. He said the Land Bridge motion had been classified as urgent because both government and opposition whips had agreed on the matter.
Representatives from the opposition whip later renewed calls for the motion to be reconsidered urgently and asked parliament to clarify the criteria used to determine whether motions qualify as urgent matters.
Former prime minister Abhisit Vejjajiva, now a party-list MP and Democrat Party leader, said the government should suspend borrowing activities after the loan decree was referred to the court for interpretation.
He argued that if the court later ruled the decree unconstitutional, the law would no longer be enforceable.
Mr Sophon said the legislature could not directly interfere in executive actions, adding that if the government proceeded and mistakes were later found, the executive would have to take responsibility.
