Griffin Coal Mine has talked down allegations the company has not communicated with its staff amid concerns over the mine's financial status.
Earlier this week the Construction, Forestry, Maritime, Mining and Energy Union called for the mining company to "come out of hiding and address speculation" on the future of the Collie mine.
CFMEU Mining & Energy WA Division Secretary Greg Busson said had the company had gone Missing In Action, with repeated requests for information going unanswered.
"It is no secret that the mine has been struggling," he said.
"Speculation about the mine's future, however, has intensified in recent months.
"While the rumours have been getting louder, the silence from the company has only added to stress of the situation for workers and locals."
According to Mr Busson, the company has failed to engage with workers or provide any information after a request for a "state of the Nation" meeting in October.
A Griffin Coal spokesperson however denied the claims of no communication, saying the mining company speaks with staff at frequent workplace forums.
"Griffin Coal continues to engage with its workforce through routine preambles and toolbox talks, as is common practice in the mining industry," he said.
"The workers have the opportunity to ask questions or raise any concerns in all of these forums."
"The financial situation of the company has not changed over the past 12 months."
The Collie company lost $37 million in the 2017-18 financial year despite cost savings through workforce trims and at last report, in March 2018, current liabilities exceeded its current assets by $485 million.