Abstract: Employee #1, a carpenter, was working from a ladder jack scaffold on a remodeling project at a private residence. One of the two ladders was fiberglass, the other was aluminum. The fiberglass ladder failed at the ladder guide rail brackets that joined the two sections of the ladder extension, causing Employee #1 to lose his balance and fall to the ground. He sustained injuries that required hospitalization. The equipment had been checked prior to use, the weight did not exceed the limit, and the scaffold had been properly set up. At the time this report was written, the cause of the ladder failure had not been determined.