On 12/10/2018, an employee was replacing metal roof panels on a steel framed building. There was an open section in the middle of the roof where the old panels had been removed. The employee went to step on a metal purlin to walk across the opening and lost their footing. The employee fell about 12 feet through the opening and landed on top of a tractor cab that was parked inside of the building and then fell off the tractor about 12 feet onto the concrete floor. The employee was hospitalized with a fractured pelvis.