In developing countries, informal firms account for up to half of economic activity. They provide livelihood for billions of people. Yet their role in economic development remains controversial with some viewing informality as pent-up potential and others viewing informality as a parasitic...

The economic troubles of less-skilled workers in the United States. and OECD-Europe during a period of rising manufacturing imports from third world countries has created a debate about whether, in a global economy, wages or employment are determined by the global rather than domestic...

That the relative demand for labor in the upper segment of the skill distribution has been shifting is a widely accepted 'stylized fact' in the literature on the increase in earnings inequality that has occurred since the late 1970s. Explanations of the causes of the relative demand shifts range...

Low-income countries typically collect taxes of between 10 to 20 percent of GDP while the average for high-income countries is more like 40 percent. In order to understand taxation, economic development, and the relationships between them, we need to think about the forces that drive the...

Although a large literature seeks to explain the "missing middle" of mid-sized firms in developing countries, there is surprisingly little empirical backing for existence of the missing middle. Using microdata on the full distribution of both formal and informal sector manufacturing firms in...

What underlying long-term conditions set the stage for the Arab Spring? In recent decades, the Arab region has been characterized by an expansion in schooling coupled with weak labor market conditions. This pattern is especially pronounced in those countries that saw significant upheaval during...

Access to and use of mobile telephony in sub-Saharan Africa has increased dramatically over the past decade. Mobile telephony has brought new possibilities to the continent. Across urban-rural and rich-poor divides, mobile phones connect individuals to individuals, information, markets, and...

Real income per head in much of sub-Saharan Africa grew rapidly in the 1960s, but faltered following the first OPEC oil price shock in 1973-74, and then stagnated or fell from the late 1970s to the early 1990s. Africa also saw a broad wave of authoritarian rule sweep the continent in the 1960s...