Scavenging In Port-au-Prince, Ouest, Haiti

There is little reliable data about the number and demographics of waste pickers worldwide. Most academic research on waste pickers is qualitative rather than quantitative. Systematic large-scale data collection is difficult due to the profession’s informal nature, porous borders, seasonally fluctuating workforce, and widely dispersed and mobile worksites. Also, many researchers are reluctant to produce quantitative data out of fear that it might be used to justify crackdowns on waste picking by authorities. Thus, the large-scale estimates that do exist are mainly extrapolations based on very small original research samples. In his book, "The World's Scavengers" (2007), Martin Medina provides a methodological guide to researching waste picking.
In 1988, the World Bank estimated that 1–2% of the global population subsists by waste picking. A 2010 study estimates that there are 1.5 million waste pickers in India alone. Brazil, the country that collects the most robust official statistics on waste pickers, estimates that nearly a quarter million of its citizens engage in waste picking.
Waste picker incomes vary vastly by location, form of work, and gender. Some waste pickers live in extreme poverty, but many others earn multiple times their country’s minimum wage. Recent studies indicate that waste pickers in Belgrade, Serbia, earn approximately US$3 per day, while waste pickers in Cambodia typically earn $1 per day. Official statistics in Brazil indicate that men earn more than women, regardless of age. Approximately two thirds of Brazil’s waste pickers are men overall, but this proportion jumps to 98% in high income waste picker groups (those earning between 3–4 times the minimum wage). No women were found in the highest income groups (those earning over 10 times the minimum wage).