This paper analyses the factors that give rise to the existence of the informal economy and how it evolves over time.  Using an occupational-choice model the paper shows that at early stages of development, informal and formal markets coexist, but in the long-run the size of the informal...

This paper uses data on judicial citations to explore whether the diffusion and/or application of knowledge within an organisation is affected by worker connectivity. Developing a simple model of discretionary citations, we distinguish between two hypotheses: knowledge diffusion whereby...

Little is known about the extent and forces of urban path dependence in developing countries.  Railroad construction in colonial Kenya provides a natural experiment to study the emergence and persistence of this spatial equilibrium.  Using new data at a fine spatial level over one century...

Agriculture is the largest sector in most sub-Saharan economies in terms of employment, and it plays an important role in supplying food and export earnings.  Rural poverty rates remain high, and labor productivity is strikingly low.  This paper asks how these factors shape the role of...

We report on a randomized field experiment using price incentives to address both economic and gender inequality in land tenure formalization.  During the 1990s and 2000s, nearly two dozen African countries proposed de jure land reforms extending access to formal, freehold land tenure to...

We develop a new methodology for quantifying the tasks undertaken within occupations using 3,000 verbs from around 12,000 occupational descriptions in the Dictionary of Occupational Titles (DOTs).  Using micro-data from the United States from 1880-2000, we find an increase in the employment...

Do locational fundamentals such as coastlines and rivers determine town locations, or can historical events trap towns in unfavorable locations for centuries?  We examine the effects on town locations of the collapse of the Western Roman Empire, which temporarily ended urbanization in Britain,...

We use survey data to investigate how urban households in Ethiopia coped with the food price shock in 2008 and idiosyncratic shocks.  Qualitative data indicate that the high food price inflation was by far the most adverse economic shock between 2004 and 2008, and that a significant proportion...

This paper examines how economic activity and market participation are distributed across space. Applying a non-parametric von Thünen model to Nepalese data, we uncover a strong spatial division of labor. Non-farm employment is heavily concentrated in and around cities while agricultural wage...

A nationally representative rural labour force survey of Chine is analysed to explore the allocation of labour among farming, local non-farming and temporary migration activites. The returns to non-farming greatly exceed those to farming, for reasons which are explored.