A mega-city is defined by the United Nations as those cities with a population exceeding 8 million. Located predominantly in the developing world, Mega-cities are subject to over-urbanisation, the rapid growth of their population the mega-cities the mega city is often associated with an array of problems and challenges including: joblessness, housing problems, water and sewage problems, health and nutrition problems and air, water and noise pollution resulting in a low standard of living for a large portion of the population.

High levels of unemployment and underemployment are characteristics of all the mega-cities of the developing world. The International Labour Organisation estimated that between 20 and 25% of urban adults living in mega cities in the developing world are unemployed and living in absolute poverty. The availability of workers allows employers to set low wages and poor working conditions including the exploitation of children. The absence of an income results for...