A man, aged 43, from Għajnsielem was grievously injured after he fell in Xewkija yesterday afternoon.
The Police said that the accident happened at around 2pm in Triq l-Imġarr.
The man fell a height of around one and a half storeys while working on a construction site.
He was treated by paramedics and taken to Gozo General hospital by ambulance.
Police investigations continue.