Abstract: On June 21, 2004, Employee #1 was working as a regular non-contract employee for the roofing contractor Commercial & Industrial Roofing, Inc., at a jobsite in San Diego, CA. The company had fifteen employees installing a new roof on a 156,000-square-foot facility built in 1988. As part of the job, they were removing and replacing the more than one hundred existing skylights. The job was three-quarters done. Old skylights, 4 feet by 8 feet in size, were stacked in one corner of the roof so that the employees could remove them with a 42-foot boom. Somehow, Employee #1 fell through a skylight; there were no direct witnesses. The most likely circumstances are that he slipped and fell onto the skylight, which then broke. Employee #1 fell approximately 38 feet onto the concrete warehouse floor, suffering massive head injuries. The immediate supervisor, Employee #1's brother, was on the ground when the accident occurred.