Officials say the man was operating a rig to move large utility poles Monday afternoon, when one of them fell, then bounced on him.
It happened at East Kentucky Power Cooperative in Clark County.
The worker was not employed by that company. Instead, he was a contractor from Jackson, Mississippi, employed by Irby Construction.
Both companies now say they'll investigate the incident.
After the accident, the man was airlifted to the UK Medical Center.
As of Monday evening, the man's name or condition had not been released.