A 57-year-old man from Qormi was grievously injured when he fell from a height of about one-storey while working at a construction site in Marsaskala.
The incident happened at around 2pm in a construction site on Triq is-Silla corner with Triq iċ-Ċervjola.
Police were called to the scene and an ambulance took the man to Mater Dei Hospital for treatment. Members from the Civil Protection Department also assisted.
An investigation into the incident is ongoing, the police said in a statement.