Abstract: At 9:00 a.m. on April 6, 2023, workers were installing a section of water line in the street of a residential neighborhood with the use of a Komatsu Excavator (Model # PC138USLC-11). At this location, tree limbs were obstructing the boom arm of the excavator to be able to pour spoils in a dump truck onsite. Employee # 1 was cutting a limb of a tree that was in the way of the excavator while standing in the excavator bucket, elevated. A limb swung back and knocked Employee # 1 out of the bucket, causing him to fall between four to eight feet and land on the ground on his head/back. Employee #1 sustained C-1, C-2 vertebrae breaks and was hospitalized. Employee # 1 died three days later, on April 9, 2023.