D. Acemoglu and P. Restrepo, Automation and new tasks: how technology displaces and reinstates labor, Journal of Economic Perspectives, vol.33, pp.3-30, 2019.

S. Agrawal, A. D. Smet, S. Lacroix, and A. Reich, To emerge stronger from the COVID-19 crisis, companies should start reskilling their workforces now. Mackinsey article, Online, 2020.

G. S. Benson, D. Finegold, and S. A. Mohrman, You paid for the skills, now keep them: Tuition reimbursement and voluntary turnover, Academy of Management Journal, vol.47, pp.315-331, 2004.

P. Bolton and M. Dewatripont, Contract Theory, 2005.

E. Brynjolfsson, J. J. Horton, A. Ozimek, D. Rock, G. Sharma et al., COVID-19 and remote work: an early look at US data, 2020.

P. Cappelli and N. Rogovsky, New work systems and skill requirements, International Labour Review, vol.133, pp.205-220, 1994.

M. A. Cohen, Upskilling: Why it might be the most important word in the legal lexicon, 2019.

D. Dietz and T. Zwick, The retention e¤ect of training: Portability, visibility, and credibility, The International Journal of Human Resource Management, pp.1-32, 2020.

R. J. Gordon, Does the "new economy" measure up to the great inventions of the past?, Journal of Economic Perspectives, vol.14, pp.49-74, 2000.

R. J. Gordon, Is US economic growth over? Faltering innovation confronts the six headwinds, 2012.

S. Grand-clement, A. Devaux, J. Belanger, and C. Manville, Digital Learning, 2017.

R. Jackman, Learning Speeds and Labor Market Adjustments, 2020.

L. Jeremy and F. Postel-vinay, Multidimensional skills, sorting, and human capital accumulation, American Economic Review, vol.110, 2020.

J. La¤ont and D. Martimort, The Theory of Incentives: The Principal-Agent Model, 2009.

D. E. Leigh and K. D. Gi¤ord, Workplace transformation and worker upskilling: the perspective of individual workers, Industrial Relations, vol.38, pp.174-191, 1999.

C. F. Manchester, Investment in general human capital and turnover intention, American Economic Review, vol.100, pp.209-222, 2010.

C. F. Manchester, General human capital and employee mobility: How tuition reimbursement increases retention through sorting and participation, Intranational Labor Relations Review, vol.65, issue.4, pp.951-974, 2012.

A. Modestino, D. Sasser, J. Shoag, and . Ballance, Upskilling: do employers demand greater skill when workers are plentiful?, Review of Economics and Statistics, pp.1-46, 2019.

B. Salanié, The Economics of Contracts: A Primer, 2005.