A divider arrangement (10) for organizing documents including a base part (26) for supportive engagement with either an elongate mounting rail (21) positioned above a worksurface or with a generally horizontal support surface, and a plurality of divider elements (27) 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 (86,81) joined together by a bottom wall (82) 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 (89). 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.