A divider arrangement for organizing documents including a base part for supportive engagement with either an elongate mounting rail positioned above a worksurface or with a generally horizontal support surface, and a plurality of divider elements which project upwardly from the base part. Each of the divider elements is defined by an upwardly opening channel member having spaced-apart front and rear walls joined together by a bottom wall extending transversely therebetween, with a plurality of the channel members being supported on the base part in sidewardly adjacent relationship so as to define a plurality of adjacent storage slots. Each of the channel members assume a slightly angled relationship relative to the base part so that the bottom wall extends at a slight angle relative to the horizontal and the front and rear walls extend at a slight angle relative to the vertical.