As a first step towards understanding the evolution of small groups in firms, this paper develops and tests a simple decision-theoretical model of research-unit evolution in which, as managers resolve their uncertainty over time, they shut down under-performing units and remove under-performing...

An industry is modeled in which entrepreneurs, who are heterogeneous in ability, may produce formally or informally. It is shown how the formal-informal mix depends on the distribution of ability, product demand and various parameter values. The industry equilibrium is compared to one in which...

What are the sources of wage growth in developing countries? In the US, general labor market experience is the key source of wage growth, with job seniority playing a smaller role. By contrast, in Indonesia, the 10-year return to seniority is 24 to 29%, which is higher than the return to...