Emergency services were called to a laneway behind the Western Star Hotel on Erskine Street at 2.12pm on Monday following reports of a gas leak.

"Someone had broken through a 32 millimetre natural gas line with an excavator," Fire and Rescue NSW Dubbo Station Officer Steve Gilbert said.

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"One of the workers became ill and got transported to hospital.

"Natural gas is an asphyxiant."

Gas leaks can be dangerous, Station Officer Gilbert said.

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"You have a leak of natural gas under pressure and it vents into the atmosphere but the issue is any sparks in the area can cause a fire," he said.

"Jemena came in and clamped it down and then conducted repairs."

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MAP: The location of the Western Star Hotel

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