Elkins, Aaron2019-03-292019-03-292015This is the published version of an article that is available at https://doi.org/10.29173/slw6897. Recommended citation: Elkins, A. (2015). Organizational citizenship behavior and school librarians. School Libraries Worldwide, 21(2), 103–114. This item has been deposited in accordance with publisher copyright and licensing terms and with the author’s permission.https://hdl.handle.net/11274/11143https://doi.org/10.29173/slw6897Research has suggested that many school librarians engage in work outside of their roles as defined by their job descriptions and professional standards. These extra-role behaviors may be explained by Organizational Citizenship Behavior theory. This paper describes the theory, its origin, component behaviors, antecedents, and other factors that influence professional performance. It concludes with a discussion of how the theory relates to the role performance of school librarians, and an agenda for further research.en-USOrganizational citizenship behavior theoryOrganizational behaviorProfessional standardsArticle