Two firms, each consisting of a team with the owner and just oneemployee, compete on the labor market with free labor mobility. Afterobserving the investment decisions by firm owners their employees canengage in costly training, thus increasing their general and firm-specificproductivity, which...

In this paper we survey the recent developments in two empirical literatures at the crossroadsof labor and urban economics: Studies about localized human capital externalities (HCE) andabout the urban wage premium (UWP). After surveying the methods and main results of eachof these two...