Police said at about 2am on Saturday, January 25 they responded to the incident and found that a 30-year-old male had been assaulted.
Upon arrival police located the unconscious male who had been punched and fallen backwards, smashing his head on a concrete floor.
The victim was conveyed to the John Hunter Hospital by ambulance for treatment.
The 30-year-old male offender from Newcastle handed himself to Tea Gardens Police at 3am the same morning.
Due to the seriousness of the victim’s injuries the offender was subjected to a breath test under the new ‘One Punch’ legislation.
The test returned a reading of 0.159 which is in the high range category.
Investigations are continuing.