A nonprofit organization (NPO) is an organization that uses surplus revenues to achieve its goals rather than distributing them as profit or dividends. The goals of an NPO are always to change or improve a social issue. NPOs use the model of a double bottom line in that furthering their cause is more important than making a profit though both are necessary to the organization's success. Although nonprofit organizations are permitted to generate surplus revenues, they must be retained by the organization for its self-preservation, expansion, or plans. NPOs have controlling members or a board of directors. Many have paid staff including management, whereas others employ unpaid volunteers and even executives who work with or without compensation (occasionally nominal). Where there is a token fee, in general, it is used to meet legal requirements for establishing a contract between the executive and the organization.Designation as a nonprofit does not mean that the organization does not intend to make a profit, but rather that the organization has no owners and that the funds realized in the operation of the organization will not be used to benefit any owners. The extent to which an NPO can generate surplus revenues may be constrained or use of surplus revenues may be restricted.