This paper provides a possible explanation for the empirically observed siz
e-wage effect and inter-industry wage differences. It develops a model in w
hich incentives for workers to accumulate general human capital are provide
d by corporate tournaments, where workers with the highest level of general
human capital win promotions. Given that the prizes in such tournaments ar
e determined by outside market conditions, the investment and the equilibri
um wages depend on firm and industry characteristics. The model implies tha
t workers in bigger firms and in more technology intensive and profitable f
irms and industries acquire more human capital and receive higher wages and
benefits.