FORTY full-time maintenance positions will be made redundant at Anglo Coal's Dawson Mine at Moura, south-west of Gladstone, according to the Australian Manufacturing Workers Union.
The union says the job cuts will be devastating for the local community.
The company also week axed about 35 positions from its Grasstree mine at Middlemount, north-west of Rockhampton, last week.
AMWU state organiser Phil Golby told the ABC companies were increasingly looking to a transient workforce.
"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."
Mr Golby said he planned to meet 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."