Queensland's premier has slammed the Liberal National Party as a "hopeless, lazy opposition" as the Labor government works to sell its borrow-to-build budget.
In her first budget, Treasurer Jackie Trad delivered $45.8 billion in infrastructure spending over the next four years, while state debt is set to rise to $83 billion over the same period.
Ms Trad defended the debt level, saying building infrastructure would drive growth, and the government was working to pay down debt as a proportion of the overall economic output of the state.
The opposition used question time in state parliament on Wednesday to attack the government over the debt issue, directing questions at both the treasurer and the premier.
"Will the five millionth Queenslander, baby Elizabeth, ever see the debt paid off in her lifetime?" Shadow Treasurer Tim Mander asked.
However the opposition then pivoted to questions about an investigation into rookie Labor MP Corrine McMillan's alleged misuse of funds while a high school principal.
Ms Palaszczuk accused the LNP of running out of questions about the budget.
"The budget was handed down yesterday and it's very clear you've run out of budget questions," the premier said.
"You are an absolutely hopeless, lazy opposition."
Opposition leader Deb Frecklington defended moving away from budget questions the day after it was handed down.
"Both the shadow treasurer and myself focused our questions on the budget directly to the premier and treasurer," Ms Frecklington told reporters on Wednesday.
"But the other questions we asked go to the heart of a matter which is a very serious issue."
The premier told the house the investigation into Ms McMillan had concluded she had no case to answer because the offences, if true, would not have resulted in her being fired if she was still employed by Education Queensland.
Ms Trad used the annual post-budget lunch speech to further defend the debt level, saying it had fallen to around 10 per cent of the state's total economic output.
"We are experiencing in Queensland a very stable and sustainable level of debt," the treasurer said.
"In fact our debt levels today are lower than when we came to government in 2015 and are expected to stay within a stable and sustainable range of 10 per cent going forward."
Ms Trad admitted that meant there wasn't the time frame to get the state back on track for an upgrade to the top-tier AAA rating from its AA+ standing.
However ratings agency Standard & Poor's on Tuesday said strong commodity prices forecast over the next four years would offset new spending announcements and help shrink state debt.
It follows predictions Queensland's unemployment rate will be six per cent or more until 2021, despite government spending to drive growth.