Anglo American is set to cut forty full-time maintenance jobs at Dawson Coal Mine at Moura, south-west of Gladstone.
According to the Australian Manufacturing Workers Union, the job cuts are set to commence in the coming weeks.
Anglo’s Dawson Mine is one of four metallurgical coal mines in Anglo American's Queensland-based Capcoal operation. Mitsui Coal Holdings owns a 30% stake in Capcoal.
The move comes after the company axed 35 full-time jobs at its Grasstree coal mine last week.
In August, the miner cut 50 jobs from its Moranbah North mine as the mine reduced its operations down to a single longwall.
At the time, an Anglo spokesperson said the decision was made “in light of recent market conditions and declining coal prices".
"This … will reduce workforce and contractor activity across the mine," she said.
"We are currently conducting a review of business requirements for the new operating environment.
AMWU state organiser Phil Golby said companies were looking to a transient workforce, The Bulletin reported.
"With the downturn in the coal and all other industries around the country, it seems to be a common theme is what we do is get rid of job security," he said.
"We get rid of jobs and basically replace them eventually with people on contract, working for contract companies, and it basically drives down workers' conditions and wages across Australia."
Golby said he would meet with workers next week.
"Moura and a lot of the mining communities have been struggling to keep a community together with the advent of fly-in, fly-out workers.
"Eventually it means there'll be more drive-in, drive-out workers or fly-in, fly-out in the central regions."
The CFMEU have slammed Anglo’s decision to cut jobs.
“Once again we’re seeing the results of a ruthless managerial approach to short-term profits at the expense of long-term investment in jobs and skills, with Anglo advocating the coal companies catch-cry rhetoric of falling coal process and the high Australian dollar," district vice president Glenn Power said.