EE INJURED BACK WHILE MOVING 60# BOXES FROM STORAGE INTO TRUCK. EE DID NOT NOTIFY SUPERVISOR OR COMPLETE AN ACCIDENT REPORT. EE HAD BACK SURGERY ON 6/30. CO. WAS NOT AWARE THAT THE INJURY WAS WORK RELATED UNTIL 7-14. EE CONTINUED TO WORK ATHIS REGULAR JOB UNTIL 6-30-03.