Abstract: At 8:00 a.m. on October 30, 2017, Employee #1 was operating a Honda Four Wheel All-Terrain Vehicle (ATV), Model TRX500FM5, weighing approximately 679 pounds, up the service trail on the slope perpendicular to the rows of grape vines. While performing an inspection on the ATV, climbing an approximately 23 degree sloped hill with uneven ground and assorted size aggregate, his coworker was sitting on the front cargo rack. The front of the ATV started to rise up off of the ground and the coworker jumped off, causing the ATV to overturn backwards unto Employee #1. The employee suffered a closed L-4 vertebral fracture and multiple contusions. He was transported to a nearby hospital, where he was admitted for treatment.