Queensland Public Works Minister Robert Schwarten has promised to pay back QBuild workers who have not received overtime and allowances.
The State Government says 450 workers have been shortchanged over three pay cycles although unions say more than a thousand people have been affected over the past eight weeks.
Mr Schwarten says a glitch in the payroll system is to blame and it should not have happened.
“We won’t leave them adrift,” he said.
“Everybody’s entitled to get paid and we’ll make sure they do anybody owed more than $100 should have been contacted already.
“That money should have been put in their bank accounts so I don’t understand the claim that people are unable to pay their mortgages when in fact everybody’s got their base pay for a start.”
The Government has promised an independent review into unrelated pay problems at Queensland Health which have shortchanged almost 3,000 workers.