THE EMPLOYEE WAS WALKING FROM HIS TRUCK LOCATED IN THE EE PARKING LOT TO THE EE CHANGE ROOM WHEN THE ACCIDENT OCCURRED. THE EE INADVERTENTLY STEPPED ON A PATCH OF ICE CAUSING HIM TO MOMENTARILY LOSE HIS BALANCE. THE EE TRIED TO CATCH HIMSELF & WRENCHED HIS LOWER BACK IN THE PROCESS W/OUT FALLING TO THE GROUND.