The South Australian Labor government has continued with its series of big spending commitments just days away from detailing how it plans to fund its election promises.

Labor opened the campaign three weeks ago with a $2 billion infrastructure commitment for works on level crossings around Adelaide.

It's followed that up with a string of other announcements, including new tramlines, and on Monday pledged $150 million to replace 600 old public housing properties.

Premier Jay Weatherill says the government will detail how it plans to fund all its promises on Thursday, two days out from Saturday's poll.

"You'll see how we account for all our promises after all of our election commitments are rolled out," he said.

On Sunday, Labor targeted aspiring home owners and those who rely on public housing.

Mr Weatherill said replacing 600 old and outdated public housing properties would create 500 jobs and a pipeline of work for the building industry.

By building two homes on many of the blocks, the program would also free up about 400 allotments to be sold off to the private housing market.

Opposition Leader Steven Marshall also focused on jobs in his latest promise to move quickly to deregulate shopping hours if the Liberals win on Saturday.

He said that would be a major boost for retailers, workers and consumers.