The contractor, from Dubbo, was working at the courthouse on Saturday, August 7 from 8am to 4pm and on Sunday, August 8 from 8am to noon.

The two Bathurst venues currently listed by NSW Health as venues of concern - the Subway outlet on William Street and Petrie's Mitre 10 on Bentinck Street - have those same dates included as their potential exposure times.

The court house contractor had a COVID-19 test on August 14 and returned a positive result.

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A spokesperson for the Department of Communities and Justice said three other workers on site were in close contact with the contractor.

"All have been tested and told to isolate, in line with advice from NSW Health," the spokesperson said.

Bathurst Court House underwent an enhanced clean and opened as usual on Monday morning, operating in line with NSW Health advice and Public Health Orders.

"External works under the Heritage Stonework Program have not been affected and are continuing," the spokesperson said.

"Safety is our number one priority and remains at the forefront of our decision-making while COVID-19 continues to pose a risk.

"We are working hard to keep the justice system free from COVID-19, with safety measures in place."

The revelation comes amid growing concerns about a ballooning COVID-19 in the Western NSW Local Health District.

There are 116 known active cases of COVID-19 in the district - including 107 in Dubbo, four in Walgett, three in Mudgee nad two in Bourke - while two COVID-positive inmates have been processed through Bathurst Correctional Centre over the past week.

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