Whilst I was reversing out of the car park at my workplace, another one of the workers that works in administration was in a hurry and was speeding through the carpark where he rear-ended my car. After telling me he was late for an appointment with the doctors, he said we would sort this out later. He then told the bosses that I had reversed into his car and that I was at fault. He is now demanding I pay for the repairs to his car ($400) due to the car accident. My car sustained little to no damage and is easily repairable for no cost. He has sent a letter of demand to me now after I refused to pay him the money. Can he legally take this further despite him being at fault under Traffic Law? There is no camera footage of the incident security nor dashcam. It is his word against mine.