A 41-year-old man was grievously injured on a construction site in Kalkara on Friday morning.
Police officers were called to the site, off Triq Santu Rokku, at around 11am.
The man, a Turkish national who lives in Gżira, fell a height measuring a storey and a half.
He was given first aid by the Civil Protection Department before being rushed to Mater Dei Hospital.
Police investigations are ongoing.