Abstract: At 7:30 p.m. on June 13, 2016, an employee was killed after falling 13 ft. through a skylight to the concrete floor. The employee was removing steel roof panels along with skylights with other employees on the roof of a steel building. The weather was hot outside and exterior lights were being utilized to provide illumination for the workers. Lights were also turned on inside the building to illuminate the location of the skylights. The roof had a slope of 1/2 to 12 and eve to ground height was 12 ft., the distance from the ground to the peak of the roof was 14 ft. After removing a steel roof panel, the employee was cutting insulation under that panel while kneeling on a steel panel that ran parallel to a skylight. After cutting the insulation, the employee stepped back or fell backward onto a skylight and fell through. The skylight the employee was working around was not covered or guarded. The employee suffered multiple internal injuries including fractures.