“…We therefore decided to go beyond the traditional 'native vs. immigrant' approach and to estimate the wage penalty associated with over-education for workers born in developed and in developing countries, respectively. 2 However, given the diversity among immigrants from developing countries, which has been shown to influence the transferability of human capital (Ramos et al, 2015), the probability of being over-educated (Jacobs et al, 2021), and the extent of wage discrimination (Grinza et al, 2020;Fays et al, 2021), we further distinguish immigrants from developing countries according to whether they were born in: i) Africa, ii) the Middle and Near East, iii) Asia, iv) Eastern Europe (non-EU), and v) Latin and Central America. 3 Our paper also contributes to the existing literature by investigating the role played by gender and education, two moderating variables that have so far received little attention.…”