The use of safety rails on ladders having platforms at their upper ends is extremely desirable and in many cases it is mandatary, but there is a tendency for operators to become careless and not make use of such safety rails. In some instances the safety rails can be welded in position, and therefore are always available for use, but when so welded such safety rails impart limitations to the usability of a ladder, which is frequently required to be used in buildings having relatively low ceilings and door heights.