Sub Divisional Police Officer (SDPO) Praveen Kumar Parai told PTI from the accident spot that the injured had told him the truck driver was drunk and that he along with his assistant fled from the spot.
There were around 35 people were on board when the truck turned turtle. Ten others were injured and have been admitted to Sadar hospital.
The truck overturned on National Highway 139 before rolling into a roadside ditch, Superintendent of Police Daljeet Singh said.
The labourers, who had come to Aurangabad for harvesting crops, were returning to their native Lesiganj village in Daltonganj district bordering Jharkhand, Mr Singh said.
State Cooperative Minister Ramadhar Singh, who is a BJP legislator from Aurangabad, condoled the death and said the state government would provide Rs 50,000 each as compensation to the families of the deceased.