Xstrata, which operates some of Australia's biggest coal mines, is cutting around 600 jobs across the country.
The company said on Monday that low coal prices, high input costs and a strong Australian dollar have left it no choice but to undertake a restructure of its operations.
Xstrata Coal's operations in New South Wales include the Mangoola, Ravensworth, Bulga and Mount Owen mines.
In a statement, Xstrata said corporate roles will also be cut at its Sydney office.
The ABC reports the cuts are not expected to have an impact on Australian coal production volumes.
