@article{fdi:010087068, title = {{O}n-the-job learning and earnings : comparative evidence from {M}orocco and {S}enegal}, author = {{N}ordman, {C}hristophe and {W}olff, {F}.{C}.}, editor = {}, language = {{ENG}}, abstract = {{I}n this paper, we consider a model of on-the-job learning where workers learn informally by watching and imitating colleagues. {W}e estimate the rate of knowledge diffusion inside the firm using two matched worker-firm data sets from {M}orocco and {S}enegal. {W}e 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. {W}e find that the rate of knowledge diffusion is around 7 percent in {M}orocco and {S}enegal, but part of the learning-by-watching returns stems from firm heterogeneity. {I}nformal training significantly affects the shape of returns to tenure in these two countries. {F}inally, we estimate an extended model with both learning-by-watching and learning-by-doing and find significant benefits from imitating colleagues in {M}orocco.}, keywords = {{MAROC} ; {SENEGAL}}, booktitle = {}, journal = {{R}{\'e}gion et {D}{\'e}veloppement}, volume = {35}, numero = {}, pages = {151--176}, ISSN = {1267-5059}, year = {2012}, URL = {https://www.documentation.ird.fr/hor/fdi:010087068}, }