Negotiations at Lanco’s Griffin coal mine will continue this week as the company continues to push for an extra half hour during shift work.
Unions had previously believed they came to an agreement with Lanco over proposed shift change, the Collie Mail reports.
However the company is still pushing for an increase in shift times and hotseat changeovers on site, with the aim to enhance production fourfold.
CFMEU secretary Gary Wood stated that Lanco will not be able to support its motion.
"There is no way in the world they can get this up," he said.
"They won’t be able to get it up before arbitration. We have provided documents showing it (the longer shift time) is inappropriate from a fatigue point of view.
"It is also is inappropriate from a community point of view," Wood added.
"There are only 24 hours in a day and the workers need to travel, prepare for work and recover."
While Wood conceded that longer working days and hotseat changeovers do work on fly in fly out operations, at these locations workers are housed in camps and transported to and from the site, whereas drive in drive out operations like Collie face extra travel and serious fatigue issues.
Wood added that some road deaths are related directly to fatigue and that fatal incidents at Yeppoon and Dysart were linked to over tired miners driving home.
The negotiations will restart today.
"We hope to have a draft agreement that we can take to the workers in the next two to three weeks," Wood told the Collie Mail.
Lanco Infrastructure head Raj Selvendra also believed a settlement can be reached.
"We have very good on-going communications with the CFMEU and AMWU and are confident we will resolve any outstanding matters by negotiation as we work together to ensure the long-term future of Griffin Coal."
Lanco also saw charges laid against Griffin over a char plant explosion in 2008.
The incident saw electrical contract Tony Eames left in a critical condition with burns to nearly half his body after an explosion at the carbonising plant.