THIS INCIDENT WAS NOT REPORTED BY THE EE UNTIL 2/6/01. EE WAS COMING DOWN A FIXED LADDER WHEN HIS HANDS SLIPPED OFF LADDER & FELL BACKWARDS 2 FTFROM GROUND AND LANDED ON RIGHT HIP. EE DID NOT REPORT INCIDENT UNTIL 2/6/01 WHEN EE STARTED TO HAVE BACK PAIN. AT THIS TIME INVESTIGATIONS IS BEING CONDUCTED TO DETERMINE WORK RELATED