- Karl Widerquist. Universal Basic Income: Essential Knowledge, Boston: Massachusetts Institute of Technology Press
- Karl Widerquist, 2023. The Problem of Property: Taking the Freedom of Nonowners Seriously, Palgrave MacMillan (138 pages)
- Karl Widerquist, 2019, “The Pursuit of Accord: Toward a Theory of Justice With a Second-Best Approach to the Insider-Outsider Problem,” Raisons Politiques 73 (1), 61-82
- Karl Widerquist, “End the Threat of Economic Destitution Now,” Open Democracy, 17 September 2019
- Jean-Fabien Spitz, Hillel Steiner, Philippe Van Parijs and Karl Widerquist, 2019, “Why Private Property?” Raisons Politiques 73 (1), 119-131
- Karl Widerquist, December 22, 2016. “The People’s Endowment.” In Axel Gosseries and Inigo Gonzalez (eds.) Institutions for Future Generations, Oxford University Press, pp. 312-330
- Karl Widerquist and Grant S. McCall, 2015. “Myths about the State of Nature and the Reality of Stateless Societies.” Analyse & Kritik 37 (2), August, 233-257
- Karl Widerquist, March 2013. Independence, Propertylessness, and Basic Income: A Theory of Freedom as the Power to Say No. New York: Palgrave Macmillan (241 pages)
- Yannick Vanderborght, José A. Noguera, and Karl Widerquist, 2013. “Politics,” in Basic Income: An Anthology of Contemporary Research, Karl Widerquist, José A. Noguera, Yannick Vanderborght, and Jurgen De Wispelaere (eds.) Oxford: Wiley-Blackwell
- Karl Widerquist, Jose Noguera, Yannick Vanderborght, and Jurgen De Wispelaere (eds.), 2013.Basic Income: An Anthology of Contemporary Research, Oxford: Wiley-Blackwell (563 pages)
- Karl Widerquist, 2013. “Freedom and Basic Income,” in Basic Income: An Anthology of Contemporary Research, Karl Widerquist, José A. Noguera, Yannick Vanderborght, and Jurgen De Wispelaere (eds.) Oxford: Wiley-Blackwell
- Karl Widerquist, 2013. “Reciprocity and Exploitation,” in Basic Income: An Anthology of Contemporary Research, Karl Widerquist, José A. Noguera, Yannick Vanderborght, and Jurgen De Wispelaere (eds.) Oxford: Wiley-Blackwell
- Jose A. Noguera and Karl Widerquist, 2013. “Basic Income as a Post-Productivist Policy,” in Basic Income: An Anthology of Contemporary Research, Karl Widerquist, José A. Noguera, Yannick Vanderborght, and Jurgen De Wispelaere (eds.) Oxford: Wiley-Blackwell
- Karl Widerquist, 2013. “Theories of Justice and Basic Income,” in Basic Income: An Anthology of Contemporary Research, Karl Widerquist, José A. Noguera, Yannick Vanderborght, and Jurgen De Wispelaere (eds.) Oxford: Wiley-Blackwell
- Yannick Vanderborght and Karl Widerquist, 2013. “The Feminist Response to Basic Income,” in Basic Income: An Anthology of Contemporary Research, Karl Widerquist, José A. Noguera, Yannick Vanderborght, and Jurgen De Wispelaere (eds.) Oxford: Wiley-Blackwell
- Michael W. Howard and Karl Widerquist, 2012. “Why Link Basic Income to Resource Taxation?” in Alaska’s Permanent Fund Dividend: Examining its Suitability as a Model, Karl Widerquist and Michael W. Howard (eds.) New York: Palgrave Macmillan, pp. 205-220
- Karl Widerquist, 2011. “Why we Demand an Unconditional Basic Income: the ECSO freedom case,” in Arguing about Justice: Essays for Philippe Van Parijs, Axel Gosseries and Yannick Vanderborght (eds.) Louvain-la-Neuve, Belgium: Presses universitaires de Louvain, pp. 387-394
- Karl Widerquist, 2010. “The Physical Basis of Voluntary Trade,” Human Rights Review 11 (1): 83-103
- Karl Widerquist, 2009. “Jeremy Waldron and the Basic Income Debate, comment on three books by Jeremy Waldron,” Citizens Income Newsletter (1)
- Karl Widerquist, 2009. “Review of Just Distribution: Rawlsian Liberalism and the Politics of Basic Income, Simon Birnbaum,” Citizens Income Newsletter (1)
- Karl Widerquist “Viewpoint: What Does the Stone Age Have to Do With Us?” Citizens Income Newsletter, Issue 3, 2008
- Karl Widerquist, 2007. “Review of the Ethics of Stakeholding, Keith Dowding, Jurgen De Wispelaere, and Stuart White,” the Citizens Income Newsletter (1)
- Karl Widerquist, 2006. Property and the Power to Say No: A Freedom-Based Argument For Basic Income, the University of Oxford (341 pages), (Later revised, extended, and published as two books, Independence, Propertylessness, and Basic Income and The Problem of Property)
- Karl Widerquist, 2006. “Who Exploits Who?” Political Studies 54 (3): 444-464
- Karl Widerquist, 2005. “Review of Libertarianism Without Inequality by Michael Otsuka,” the Citizens Income Newsletter (1)
- Karl Widerquist, 2005. “Does She Exploit or Doesn’t She?” in The Ethics and Economics of the Basic Income Guarantee, Karl Widerquist, Michael A. Lewis, and Steven Pressman (eds.), Aldershot, UK: Ashgate, 2005, pp. 138-162
- Karl Widerquist, Michael Anthony Lewis, and Steven Pressman (eds.), 2005. The Ethics and Economics of the Basic Income Guarantee, Aldershot, UK: Ashgate (352 pages)
- Karl Widerquist, 2004. “Review of The Civic Minimum by Stuart White,” the Citizens Income Newsletter (1)
- Karl Widerquist, 2004. “Review of Real Libertarianism Assessed, Andrew Reeve and Andrew Williams (eds.),” the Citizens Income Newsletter (1)
- Karl Widerquist, 1999. “Reciprocity and the Guaranteed Income” Politics and Society, 33 (3): 386-401
- Karl Widerquist “The Money-Making Ethic,” Chronogram Magazine, New Paltz, NY, January 1999
Audio-Video
Smart Talk: UBI – What It Is and Why We Need It (video). Interview of Karl Widerquist by Edward Dodson. Henry George School of Social Science, June 3, 2024.
An interview with Karl Widerquist, “Universal Basic Income.” By Stephen Pimpare, the New Books in Public Policy Podcast, posted March 22, 2024.Available on most podcast-streaming platforms including Spotify.
Dr. Karl Widerquist says we need Universal Basic Income now. By Dr. Al Scott, the Rational View (podcast), Episode 189. March 23, 2024. Available on Spotify, PodBean, and Apple Podcasts.