EMPLOYEE CLIMBED ONTO A 14 FT METAL/FIBERGLASS LADDER POSITIONED AGAINST A CONNEX. EMPLOYEE WAS TYING OFF THE LADDER WHEN THE LADDER SLIPPED, BUT IT DID NOT FALL. EMPLOYEE FELL APPROXIMATELY 4 FT TO THE GROUND SUSTAINING A FRACTURED RIGHT WRIST AND SHOULDER. MEDICAL ASSISTANCE WAS IMMEDIATELY SUMMONED. EMPLOYEE WAS TREATED AND TRANSPORTED.