Labor and a prominent think-tank have rejected climate policy modelling which paints emissions targets as damaging for the economy.
The modelling, authored by Brian Fisher from BAEconomics, says Labor's 45 per cent emissions reduction target would cause more than 300,000 job losses as well as drop wages by eight per cent.
Labor's climate and energy spokesman Mark Butler says the modelling released on Tuesday is at odds with other analysis, labelling it as "complete rubbish".
"(This is) yet another piece of dodgy modelling to prop up the latest scare campaign to convince voters and the business community to do nothing about climate change," he told ABC Radio National.
"We're not going to be distracted from taking a climate change policy to the community that takes our responsibility to deal with this issue very seriously."
Labor is yet to announce its full climate policy.
The coalition's emissions reduction target of 26 to 28 per cent on 2005 levels by 2030 would cost 78,000 jobs, the modelling found.
Dr Fisher also concluded it would see wages drop by two per cent.
But Energy Minister Angus Taylor has welcomed the modelling, saying Labor's targets are "reckless".
The 45 per cent reduction target would hurt industries the nation relies on, such as manufacturing, he added.
The Australia Institute's climate and energy program director Richie Merzian has questioned why Mr Taylor isn't using government agencies to model policies.
Assumptions and costs regarding the future of renewable energy used in the modelling are wrong, Mr Merzian says.
