The man, aged in his twenties, was helping to clear out a dam with the heavy machinery, when the bobcat became bogged in mud.
He was assisting with the removal of the trapped bobcat and was standing next to the excavator, when its bucket dropped down and crushed him.
RACQ LifeFlight Rescue landed at the scene at approximately 4pm.
The man was treated for serious head injuries.
He is currently being flown to Brisbane in a serious condition.
2018 was a record year for LifeFlight for lifesaving missions with its aeromedical crews, community helicopters and Air Ambulance jets performing a record 5,724 missions throughout Queensland and around the world.
LifeFlight is a community-based charity funded and supported by the LifeFlight Foundation
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