EMPLOYEE WAS ON DOZER PLATFORM AND DROPPED HIS PENCIL, BENT OVER TO PICK IT UP AND BUMPED HIS HEAD ON THE MACHINE WHICH CAUSED HIM TO LOSE HIS BALANCE, LOST HIS GRIP AND SLIPPED DOWN ONTO HIS PICKUP TRUCK HOOD WHICH WAS PARKED NEXT TO HIS MACHINE, THEN SLIPPED DOWN TO THE GROUND.