Countries in southern Africa have achieved little in stopping child labour, with children as young as five found working in livestock and crop production, and forestry and fisheries, according to a new report by the US labour department. Child labour is generally defined by the United Nations as work that deprives children of their childhood, their potential and their dignity, and is harmful to their physical and mental development. The report, titled "2020 findings on the worst forms of child labour", covers all countries around the world. According to the report, Malawi has children working as tobacco harvesters and sex workers. Tobacco accounts for about 50% of the country's total forex earnings.