About 80 jobs at PYBAR have been lost after two of the Orange-based company's clients suspended operations.
About 190 positions were affected by the shutdown of two mines, but 110 employees have been redeployed into other roles.
A spokesperson for PYBAR said about 80 people had lost their jobs and the counselling was being made available to those workers.
Most of the job losses have occurred in Queensland after the owner of King Vol Mine in North Queensland went into administration and the Woodlawn Mine near Goulburn was placed into care and maintenance.
The spokesperson said the coronavirus pandemic "has had a flow-on effect to the mining sector" and PYBAR has "not been immune to these impacts".
"With the reduction in operations, there is also a reduced need for offsite support across the business," the spokesperson said.
"We are actively redeploying some of these support roles to operations where possible, subject to border closures and restrictions.
"There will be some people that we cannot redeploy or situations that prevent us from doing so, and in these cases we will have to let these people leave the business."
The spokesperson said PYBAR was "optimistic" the company would be able to re-hire once the dust settled on the COVID-19 slowdown which has hit all aspects of the economy.
"We are focused on ensuring operations continue, and whilst these are uncertain times, we are mindful of the cyclical nature of our industry," they said.
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