Treasury has provided no modelling to support Scott Morrison's promise to create 1.25 million jobs over five years.
Labor lodged a freedom of information request to Treasury seeking all documents and modelling related to the pledge, which the prime minister made in January.
"The Treasury holds no documents within the scope of your request," the department said in a response released on Monday.
Shadow treasurer Chris Bowen says it's "lazy and reckless" for the pledge to not be supported by appropriate modelling.
"The Liberal Party is quick to get Treasury to model and cost Labor's policies but they couldn't be bothered getting their own policies modelled," he told AAP in a statement.
At recent Senate estimates Treasury officials said the 1.25 million jobs target was at odds with the department's budget figures.
"When asked about the government's jobs' target, the deputy secretary of macroeconomic group confirmed that the government's target would require annual jobs growth of 1.9 per cent," Mr Bowen said.
"Which is higher than the 1.5 per cent or 1.75 per cent assumed in current budget figures."
Trade Minister Simon Birmingham says the proof of the pledge "is in our policies".
The coalition oversaw the creation of 1.2 million jobs over the last five-and-a-half years instead of the one million promised, he said.
"In doing so we've seen record growth in youth employment, we've seen female workforce participation at its highest level ever," the minister told Sky News on Monday.
"Under our policy settings, we're confident we'll continue to grow and deliver that jobs growth."
