An Emergency Services Agency spokesperson said the man was taken to the Canberra Hospital after a "difficult extraction" with injuries to his lower back and pelvis.
He has since been discharged from hospital.
The fall happened about 10:30am on Monday at a worksite on the corner of Gozzard and Ernest Cavanagh streets in Gungahlin.
In a statement, Greg Jones from Access Canberra said WorkSafe inspectors conducted an audit of the entire site after the accident, issuing six improvement notices for matters including clear access, configuration of scaffolding and handrail systems.
A notice was also issued preventing work in the area of the incident while WorkSafe conducts its investigation.
"While I am pleased to report that the worker has been able to leave hospital, I was saddened, and disappointed, to learn that a Canberra worker had suffered injuries during the course of his employment," Mr Jones said.
"Tasks involving working at heights is one of the most dangerous activities on construction sites.
"I reiterate the importance of being diligent in all workplaces, especially in high risk workplaces such as construction sites."
Source ABC News