The incident occurred at 8:30 am, people in the vicinity heard a loud noise and saw three workers on the ground. The workers were immediately sent to the hospital and local police were notified of the incident.
Local witnesses said the labourers were working on the third floor when they misplaced their steps and fell to the ground.
The scene was closed off by relevant units until 11am for an investigation into the cause of the incident.
After receiving medical treatment at hospital, the three workers are recovering well and local police have collected their statements to conduct further investigations.