HE REPORTED THAT HE FELT HIS BACK BEGIN TO HURT AFTER HE WENT HOME; IT GOT WORSE OVERNIGHT & HE COULD BARELY MOVE DUE TO PAIN. HE WAS EXAMINED BY COMPANY DR. ON 6/16/00 & IT WAS DETERMINED TH AT HIS CURRENT PROBLEM STEMMED FROM A PREVIOUS BACK INJURY IN 1992. THERE WAS NO CURRENT INCIDENT TO SUGGEST THE INJURY OCCURRED ON THE DAY IT WAS REPORTED TO HIS SUPERVISOR.