Union leaders and members will meet in Beaconsfield today to draft the terms of reference for an independent inquiry into the rockfall at the gold-mine.
The Australian Workers' Union national secretary, Bill Shorten, says an independent, well-resourced inquiry addressing the workplace issues is vital.
He says the miners and their families deserve the opportunity to have input.
"We'll be talking to them also to make sure that the welfare of miners, rescuers and families is still the front and foremost consideration for everyone involved in this mining disaster."
Mr Shorten is standing by the union's claim that the seismic activity that triggered the rockfall was from deep mining, not a natural disaster.
He says it was a catastrophic failure of safety.