EE WAS OPERATING A DUMP TRUCK. THE EE GOT OUT OFTHE OPERATOR'S CAB TO INSPECT THE TRUCK BED. HE CLIMBED THE BED LADDER & LOOKED OVER INTO THE TRUCK BED.WHEN CLIMBING BACK DOWN HE MISSED THE BO TTOM RUN, SLIPPED & FELL LANDING ON HIS SIDE. HEWENT FOR MED TREATMENT BUT NONE WAS INDICATED. 0N 3/4/04 EE RET'D TO DR WITH ELBOW PAIN AND BEGAN MODIFIED DUTY ON 3/5/04