This paper demonstrates that insiders can erect barriers to entry and skim rents by sinking costs in human capital when labour markets are otherwise perfectly contestable. The sunk costs nature of human capital investments may result from the need to satisfy ever increasing specialised skill...

This paper demonstrates that the share of apprentices exhibits a relatively strong seasonal pattern. This means that statistics on the share of apprentices such as those presented in official publications differ substantially from the actual yearly mean if they are measured on a date close to...

This paper demonstrates that the share of apprentices exhibits a relatively strong seasonal pattern. This means that statistics on the share of apprentices such as those presented in official publications differ substantially from the actual yearly mean if they are measured on a date close to...

Moderne Innovationsprozesse sind durch eine zunehmende Komplexität gekennzeichnet, die dafür verantwortlich ist, daß kaum ein Unternehmen mehr allein in der Lage ist, alle relevanten Entwicklungen zu verfolgen, geschweige denn zu beherrschen. Aus diesem Grund wird der Rückgriff auf externe...