EE HAS BEEN DRIVING A HAUL TRUCK SINCE RETURNING TO WORK IN JAN 2000 FROM A RELATED BACK INJURY ALSO DATING BACK TO 1994. EE REPORTED TO HIS SUPERVISOR ON 9-15-00 THAT HIS BACK STARTED HURTING AGAIN AND HAS HASN'T BEEN ABLE TO RETURN TO WORK SINCE. THIS REPORT IS A RESULT OF A PART50 AUDIT.