%0 Report %A Nordman, Christophe Jalil %A Wolff, François-Charles %T On-the-Job Learning and Earnings: Comparative Evidence from Morocco and Senegal %D 2012 %8 2012 Jul %I Institute of Labor Economics (IZA) %C Bonn %7 IZA Discussion Paper %N 6728 %U https://www.iza.org/index.php/publications/dp6728 %X In this paper, we consider a model of on-the-job learning where workers learn informally by watching and imitating colleagues. We estimate the rate of knowledge diffusion inside the firm using two matched worker-firm data sets from Morocco and Senegal. We rely on non-linear least squares to estimate the structural parameters of the informal learning model and account for firm heterogeneity using firm factors derived from a principal component analysis. We find that the rate of knowledge diffusion is around 7 percent in Morocco and Senegal, but part of the learning-by-watching returns stems from firm heterogeneity. Informal training significantly affects the shape of returns to tenure in these two countries. Finally, we estimate an extended model with both learning-by-watching and learning-by-doing and find significant benefits from imitating colleagues in Morocco. %K returns to tenure %K learning-by-doing %K learning-by-watching %K informal training %K earnings functions %K Morocco %K Senegal