Abstract: At 4:15 p.m. on May 2, 2019, Employee#1, employed by a roofing company, was doing renovation work at a one-story multifamily residential building. He was on the roof when he unhooked his lanyard and climbed down to the ground to get a chalk line. When he climbed back up the ladder, he did not reattach his lanyard before he knelt down to snap the chalk line. He was kneeling on the edge of the roof when the flexible waterproofing material gave way. He fell approximately 8.5 feet onto a pile of landscaping posts. The employee was transported to the hospital and admitted for treatment of multiple rib fractures.