The two men 7-Eleven chose to make sure exploited workers were paid have slammed the company for sacking them.
Dr David Cousins and Professor Allan Fels processed hundreds of claims of underpayment before they were sacked on Wednesday, with 7-Eleven choosing to bring the independent process in-house.
Dr Cousins said 7-Eleven tried to take control of the process as the number of exploitation claims rose, despite promising it would be independent and anonymous.
"The company was spooked by suggestions it might have to pay out in excess of $100 million," Dr Cousins said in a statement on Saturday.
Prof Fels also lashed out at 7-Eleven on Wednesday, saying the company was trying to get out of paying back workers.
He believes most of 7-Eleven's 20,000 workers over the past decade have been underpaid by about half.
New chief executive Angus McKay told the media on Thursday 7-Eleven would continue to pay back "valid" claims, after he said workers had been trying to defraud the company.
So far 421 workers have been paid $16.7 million since the process began eight months ago, with another 1931 being assessed and a further 1400 about to start.
