A ladder has first and second support members, joined at their upper ends by a hinge. The first and second support members have left rail and a right rail that support plural first and second steps. Steps secured to the rails a fixed distance apart and are staggered so that the steps of the first support member begin at a different elevation than the steps of the second support member. The steps are wider than the rails to provide a larger surface for a user to stand. The ladder has a deployed position in which first ends of the first and second supports remain close and the second ends are spread apart and held in a distance apart by a spreader bar. Upon drawing the second ends of the first and second supports together, the steps of the first and second support member do not touch or interfere and may interleave.