Access to and Returns from Unpaid Graduate Internships
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- Holford, Angus, 2017. "Access to and returns from unpaid graduate internships," ISER Working Paper Series 2017-07, Institute for Social and Economic Research.
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- Chevalier, Arnaud & Gibbons, Steve & Thorpe, Andy & Snell, Martin & Hoskins, Sherria, 2009.
"Students' academic self-perception,"
Economics of Education Review, Elsevier, vol. 28(6), pages 716-727, December.
- Arnaud Chevalier & Steve Gibbons & Andy Thorpe & Sherria Hoskins, 2007. "Students' Academic Self Perception," Working Papers 200729, Geary Institute, University College Dublin.
- Arnaud Chevalier & Steve Gibbons & Sherria Hoskins & Martin Snell & Andy Thorpe, 2008. "Students academic self-perception," CEE Discussion Papers 0090, Centre for the Economics of Education, LSE.
- Chevalier, Arnaud & Gibbons, Stephen & Thorpe, Andy & Snell, Martin & Hoskins, Sherria, 2007. "Students' Academic Self-Perception," IZA Discussion Papers 3031, Institute of Labor Economics (IZA).
- Chevalier, Arnaud & Gibbons, Stephen & Thorpe, Andy & Snell, Martin & Hoskins, Sherria, 2008. "Students' academic self-perception," LSE Research Online Documents on Economics 19377, London School of Economics and Political Science, LSE Library.
- Daniëlle Bertrand-Cloodt & Frank Cörvers & Ben Kriechel & Jesper Thor, 2012.
"Why Do Recent Graduates Enter into Flexible Jobs?,"
De Economist, Springer, vol. 160(2), pages 157-175, June.
- Bertrand-Cloodt, D.A.M. & Cörvers, F. & Kriechel, B. & van Thor, J.A.F., 2011. "Why do recent graduates enter into flexible jobs?," Research Memorandum 046, Maastricht University, Maastricht Research School of Economics of Technology and Organization (METEOR).
- Bertrand-Cloodt, D.A.M. & Cörvers, F. & Kriechel, B. & van Thor, J.A.F., 2011. "Why do recent graduates enter into flexible jobs?," ROA Research Memorandum 010, Maastricht University, Research Centre for Education and the Labour Market (ROA).
- Pedro Carneiro & James J. Heckman, 2002.
"The Evidence on Credit Constraints in Post--secondary Schooling,"
Economic Journal, Royal Economic Society, vol. 112(482), pages 705-734, October.
- Pedro Carneiro & James J. Heckman, 2002. "The Evidence on Credit Constraints in Post-Secondary Schooling," NBER Working Papers 9055, National Bureau of Economic Research, Inc.
- Carneiro, Pedro & Heckman, James J., 2002. "The Evidence on Credit Constraints in Post-Secondary Schooling," IZA Discussion Papers 518, Institute of Labor Economics (IZA).
- Nakajima, Ryo & Tamura, Ryuichi & Hanaki, Nobuyuki, 2010.
"The effect of collaboration network on inventors' job match, productivity and tenure,"
Labour Economics, Elsevier, vol. 17(4), pages 723-734, August.
- Ryo Nakajima & Ryuichi Tamura & Nobuyuki Hanaki, 2009. "The Effect of Collaboration Network on Inventors' Job Match, Productivity and Tenure," Tsukuba Economics Working Papers 2009-001, Faculty of Humanities and Social Sciences, University of Tsukuba.
- Guell, Maia & Petrongolo, Barbara, 2007.
"How binding are legal limits? Transitions from temporary to permanent work in Spain,"
Labour Economics, Elsevier, vol. 14(2), pages 153-183, April.
- Güell, Maia & Petrongolo, Barbara, 2003. "How Binding Are Legal Limits? Transitions from Temporary to Permanent Work in Spain," IZA Discussion Papers 782, Institute of Labor Economics (IZA).
- Petrongolo, Barbara & Güell, Maia, 2003. "How Binding are Legal Limits? Transitions from Temporary to Permanent Work in Spain," CEPR Discussion Papers 3931, C.E.P.R. Discussion Papers.
- Maia Güell & Barbara Petrongolo, 2003. "How binding are legal limits? Transitions from temporary to permanent work in Spain," Economics Working Papers 682, Department of Economics and Business, Universitat Pompeu Fabra, revised Jul 2005.
- Maia Güell & Barbara Petrongolo, 2003. "How Binding are Legal Limits? Transitions from Termporary to Permanent Work in Spain," Working Papers 75, Barcelona School of Economics.
- Alison L. Booth & Marco Francesconi & Jeff Frank, 2002.
"Temporary Jobs: Stepping Stones Or Dead Ends?,"
Economic Journal, Royal Economic Society, vol. 112(480), pages 189-213, June.
- Booth, Alison L. & Francesconi, Marco & Frank, Jeff, 2000. "Temporary Jobs: Stepping Stones or Dead Ends?," IZA Discussion Papers 205, Institute of Labor Economics (IZA).
- Alison L. Booth & Marco Francesconi & Jeff Frank, 2002. "Temporary Jobs: Stepping Stones or Dead Ends?," LABORatorio R. Revelli Working Papers Series 8, LABORatorio R. Revelli, Centre for Employment Studies.
- Checchi, Daniele & Fiorio, Carlo V. & Leonardi, Marco, 2014. "Parents' risk aversion and children's educational attainment," Labour Economics, Elsevier, vol. 30(C), pages 164-175.
- Melanie K. Jones & Paul L. Latreille & Peter J. Sloane, 2006. "Disability, gender, and the British labour market," Oxford Economic Papers, Oxford University Press, vol. 58(3), pages 407-449, July.
- McGuinness Seamus & Whelan Adele & Bergin Adele, 2016.
"Is There a Role for Higher Education Institutions in Improving the Quality of First Employment?,"
The B.E. Journal of Economic Analysis & Policy, De Gruyter, vol. 16(4), pages 1-15, October.
- McGuinness Seamus & Whelan Adele & Bergin Adele, 2016. "Is There a Role for Higher Education Institutions in Improving the Quality of First Employment?," The B.E. Journal of Economic Analysis & Policy, De Gruyter, vol. 16(4), pages 1-15, October.
- McGuinness, Seamus & Whelan, Adele & Bergin, Adele, 2016. "Is There a Role for Higher Education Institutions in Improving the Quality of First Employment?," IZA Discussion Papers 10138, Institute of Labor Economics (IZA).
- Stiglitz, Joseph E, 1975.
"The Theory of "Screening," Education, and the Distribution of Income,"
American Economic Review, American Economic Association, vol. 65(3), pages 283-300, June.
- Joseph E. Stiglitz, 1973. "The Theory of 'Screening', Education, and the Distribution of Income," Cowles Foundation Discussion Papers 354, Cowles Foundation for Research in Economics, Yale University.
- Nunley, John M. & Pugh, Adam & Romero, Nicholas & Seals, R. Alan, 2016.
"College major, internship experience, and employment opportunities: Estimates from a résumé audit,"
Labour Economics, Elsevier, vol. 38(C), pages 37-46.
- John M. Nunley & Adam Pugh & Nicholas Romero & Richard Alan Seals, Jr., 2014. "College Major, Internship Experience, and Employment Opportunities: Estimates from a Résumé Audit," Auburn Economics Working Paper Series auwp2014-03, Department of Economics, Auburn University.
- John M. Nunley & Adam Pugh & Nicholas Romero & Richard Alan Seals, Jr., 2015. "College Major, Internship Experience, and Employment Opportunities: Estimates from a Résumé Audit," Auburn Economics Working Paper Series auwp2015-09, Department of Economics, Auburn University.
- Zwysen, Wouter & Longhi, Simonetta, 2016. "Labour market disadvantage of ethnic minority British graduates: university choice, parental background or neighbourhood?," ISER Working Paper Series 2016-02, Institute for Social and Economic Research.
- Sascha O. Becker & Marco Caliendo, 2007.
"Sensitivity analysis for average treatment effects,"
Stata Journal, StataCorp LP, vol. 7(1), pages 71-83, February.
- Sascha O. Becker & Marco Caliendo, 2007. "mhbounds - Sensitivity Analysis for Average Treatment Effects," Discussion Papers of DIW Berlin 659, DIW Berlin, German Institute for Economic Research.
- Becker, Sascha O. & Caliendo, Marco, 2007. "mhbounds - Sensitivity Analysis for Average Treatment Effects," IZA Discussion Papers 2542, Institute of Labor Economics (IZA).
- Simon, Curtis J & Warner, John T, 1992. "Matchmaker, Matchmaker: The Effect of Old Boy Networks on Job Match Quality, Earnings, and Tenure," Journal of Labor Economics, University of Chicago Press, vol. 10(3), pages 306-330, July.
- Dearden, Lorraine, et al, 2002.
"The Returns to Academic and Vocational Qualifications in Britain,"
Bulletin of Economic Research, Wiley Blackwell, vol. 54(3), pages 249-274, July.
- Lorraine Dearden & Steven McIntosh & Michal Myck & Anna Vignoles, 2000. "The Returns to Academic and Vocational Qualifications in Britain," CEE Discussion Papers 0004, Centre for the Economics of Education, LSE.
- DiPrete, Thomas A. & Gangl, Markus, 2004. "Assessing bias in the estimation of causal effects: Rosenbaum bounds on matching estimators and instrumental variables estimation with imperfect instruments," Discussion Papers, Research Unit: Labor Market Policy and Employment SP I 2004-101, WZB Berlin Social Science Center.
- Matthew Blackwell & Stefano Iacus & Gary King & Giuseppe Porro, 2009.
"cem: Coarsened exact matching in Stata,"
Stata Journal, StataCorp LP, vol. 9(4), pages 524-546, December.
- Matthew Blackwell & Stefano Iacus & Gary King & Giuseppe Porro, 2010. "CEM: Coarsened Exact Matching in Stata," BOS10 Stata Conference 8, Stata Users Group.
- Philip Trostel & Ian Walker, 2004. "Sheepskin effects in work behaviour," Applied Economics, Taylor & Francis Journals, vol. 36(17), pages 1959-1966.
- George A. Akerlof, 1970. "The Market for "Lemons": Quality Uncertainty and the Market Mechanism," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 84(3), pages 488-500.
- Saniter, Nils & Siedler, Thomas, 2014.
"Door Opener or Waste of Time? The Effects of Student Internships on Labor Market Outcomes,"
IZA Discussion Papers
8141, Institute of Labor Economics (IZA).
- Siedler, Thomas & Saniter, Nils & Schumann, Mathias, 2016. "Door Opener or Waste of Time? The Effects of Student Internships on Labor Market Outcomes," VfS Annual Conference 2016 (Augsburg): Demographic Change 145739, Verein für Socialpolitik / German Economic Association.
- Sascha O. Becker & Andrea Ichino, 2002. "Estimation of average treatment effects based on propensity scores," Stata Journal, StataCorp LP, vol. 2(4), pages 358-377, November.
- Michael Spence, 1973. "Job Market Signaling," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 87(3), pages 355-374.
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- Ken Roberts, 2022. "Integrating Young People into the Workforce: England’s Twenty-First Century Solutions," Societies, MDPI, vol. 12(2), pages 1-15, March.
- Baert, By Stijn & Neyt, Brecht & Siedler, Thomas & Tobback, Ilse & Verhaest, Dieter, 2021.
"Student internships and employment opportunities after graduation: A field experiment,"
Economics of Education Review, Elsevier, vol. 83(C).
- Stijn Baert & Brecht Neyt & Thomas Siedler & Ilse Toback & Dieter Verhaest, 2019. "Student Internships And Employment Opportunities After Graduation: A Field Experiment," Working Papers of Faculty of Economics and Business Administration, Ghent University, Belgium 19/974, Ghent University, Faculty of Economics and Business Administration.
- Baert, Stijn & Neyt, Brecht & Siedler, Thomas & Tobback, Ilse & Verhaest, Dieter, 2019. "Student Internships and Employment Opportunities after Graduation: A Field Experiment," IZA Discussion Papers 12183, Institute of Labor Economics (IZA).
- Auriel M V Fournier & Angus J Holford & Alexander L Bond & Margaret A Leighton, 2019. "Unpaid work and access to science professions," PLOS ONE, Public Library of Science, vol. 14(6), pages 1-16, June.
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More about this item
Keywords
job satisfaction; human capital; internships; higher education;All these keywords.
JEL classification:
- J24 - Labor and Demographic Economics - - Demand and Supply of Labor - - - Human Capital; Skills; Occupational Choice; Labor Productivity
- J28 - Labor and Demographic Economics - - Demand and Supply of Labor - - - Safety; Job Satisfaction; Related Public Policy
- J31 - Labor and Demographic Economics - - Wages, Compensation, and Labor Costs - - - Wage Level and Structure; Wage Differentials
NEP fields
This paper has been announced in the following NEP Reports:- NEP-EUR-2017-07-16 (Microeconomic European Issues)
- NEP-LMA-2017-07-16 (Labor Markets - Supply, Demand, and Wages)
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