EE COMPLAINED OF BACK PAIN ON 7/24/05 FROM THE SEAT IN HIS HAUL TRUCK BOTTOMING SEVERAL TIMES DURING THE SHIFT. HE CALLED OFF FOLLOWING SHIFT BUT GAVE NO REASON. INJURY DATE 7/22/05. THIS SEAT WAS IN THE TRUCK FOR 3 WEEKS AND WAS CHANGED OUT AFTER HIS INJURY. MANUFACTURER FOUND NO REASON FOR IT TO BE BOTTOMING OUT