Documents Tripier, Fabien 5 results

"This paper demonstrates that firms hire and train workers efficiently in a matching and intrafirm bargaining economy when the Hosios condition holds and returns to scale are constant. This conclusion stands in contrast to the prevailing view that training costs are a source of inefficiency in imperfect labor markets. The efficiency of the competitive economy relies on the ability of large firms to take into account the negative impact of the training rate on the wages negotiated inside the firm through intrafirm bargaining: untrained workers accept a wage reduction in compensation for potential training that is accessible only following employment. This intrafirm bargaining process solves efficiency problems associated with training costs that would otherwise lead to inefficient hiring and training decisions. This conclusion holds true for both specific and general human capital."

The scale of public expenditure to be incurred in the Covid-19 health crisis is raising heated debates about the appropriate funding. Long rejected by mainstream macroeconomics due to its possible inflationary consequences, monetization is currently undergoing a surprising rehabilitation. Defined as the financing of public expenditure by money issuance -without the government ever reimbursing the central bank-, monetization appears as an attractive solution in a context where the burden of public debt could become particularly problematic due both to the persistent threat of secular stagnation and the massive Covid-19 shock. This policy brief offers some theoretical insights into this debate opposing monetization and issuance of additional public debt. We first clarify what is happening to current debt and how its sustainability can be assessed, before examining how current mainstream macroeconomics can be used to rehabilitate the use of monetization of public spending. In conclusion, we draw attention to the particular democratic challenges implied by such a policy in the Euro area context, in terms of balance of powers between European institutions."

"This paper studies how the announcement of ECB's monetary policies has stopped the contagion of the COVID-19 pandemic in the European sovereign debt markets. We show that up to March 9, the occurence of new cases in euro area countries has a sizeable and persistent effect on 10-years sovereign bond spreads relative to Germany: the occurrence of 1000 new cases is accompanied by an immediate increase in the spread which lasts 5 days after, reaching an increase of 0.54 percentage point. Afterwards, the effect is close to zero and not significant. We interpret this change as a successful outcome of the ECB's press conference on March 12 despite the ”we are not here to close spreads” controversy. Indeed, a counterfactual shows that without this shift in the sensitivity of sovereign bond markets to COVID-19, spreads would have surged to 4.4% in France, 9.6% in Spain, and 19.2% in Italy as early as March 18, when the ECB's Pandemic Emergency Purchase Programme has finally been announced."

"This paper assesses the drivers of wealth inequality. While inequality between skilled and unskilled workers is due to differences in educational attainment, within-group inequality is due to differences in productivity across firms. Workers in more successful firms are paid more than their peers with the same level of education and skills in less successful firms.
Out of four major structural changes affecting the US economy – namely a rising share of skilled workers, skill-biased technological change, decreasing progressiveness of taxation and productivity slowdown – we show that the decline in productivity growth not only is the main driver of the widening wealth disparities observed in the United States of America over the past few decades, but is also the only mechanism that can explain inequalities both within and between skill groups."