Abstract: On September 23, 2010, Employee #1, a groundskeeper, was performing landscape maintenance at a residence. As he was aloft, pruning the branches of a Ficus tree and moving laterally to another branch, the sliding-positioning knot at the end of his climbing rope came loose. Employee #1 fell approximately 8 feet, landing on the ivy ground coverage below. He was taken to a nearby medical facility, where he was hospitalized and treated for a broken left wrist. The accident investigation determined that despite Employee #1 using the appropriate fall protection, which included a tree saddle, lanyard, and the climbing rope, he did not have a stop knot in the form of a figure-eight knot at the end of the climbing rope. The employer required employees to use a figure-eight knot during work.