François RycxCorresponding member IRES. Université libre de Bruxelles (CEBRIG and DULBEA), GLO, IRES, IZA, Soci&ter
Author
Giulia SantosuossoUniversité libre de Bruxelles and E.CA Economics
Author
Guillaume VermeylenUniversité de Mons, Soci&ter, DULBEA and CEBRIG
Author
Abstract
While the literature on the incidence and wage effects of over-education is substantial, specific results for doctoral graduates are surprisingly scarce. This article aims to fill this gap, not only by measuring the prevalence of over-educated PhD holders in Europe (i.e. in EU Member States and the UK), but also by estimating their wage penalty relative to what they could have earned in a job corresponding to their level of education. Using a unique pan-European dataset, we rely on two alternative measures of over-education and control stepwise for four groups of covariates (i.e. socio-demographic characteristics, skills needed for the job, other job-specific characteristics and motivations for employment) in order to interpret the over-education wage penalty in light of theoretical models. Depending on the specification adopted, we find that over-educated PhD holders face a wage penalty ranging from 25 to 13.5% with respect to their well-matched counterparts. Our results also show that the over-education wage penalty is significantly higher for PhD holders who are both over-educated and over-skilled and especially for those who are both over-educated and dissatisfied with their jobs. Finally, unconditional quantile regressions highlight that the over-education wage penalty among PhD holders increases greatly along the wage distribution.
François Rycx, Giulia Santosuosso, & Guillaume Vermeylen. (2022). The Over-education Wage Penalty Among PhD Holders: A European Perspective (LIDAM Discussion Paper IRES/2022/16). https://hdl.handle.net/2078.5/104331