Abstract: Employee #1 was cutting grass on a freeway embankment using a Kubota tractor, model #L245, serial #L245-53373, engine model #DH1101-A, with rollover protection (ROPS L185/L245 ROPS model L1162, maximum 4,000 lb, serial #2301) and a hydraulic sickle bar attachment. He was traveling backwards on the embankment, approximately 80 ft above the freeway, when the front end of the tractor started to slide toward the edge of the embankment on the freeway side. Employee #1 turned the tires toward the slide but the tractor started going over the edge of the embankment. Employee #1 rode the tractor down the slope and sustained a fractured left arm and leg and a puncture to his back. Coworkers were approximately 1/2 mile northwest on the freeway edge, beyond view of the accident.