It's the problem at the heart of child labor in Yemen -- simple economics...Most children have to work to support their families, while the poorest families simply cannot afford school fees or uniforms, so they send their children to work instead...In Yemen's cities, children often work in restaurants, peddling goods on the streets, or collecting garbage for recycling. It's not uncommon to see boys working as car mechanics or in metal workshops, surrounded by dangerous equipment, said Contin. In rural areas children usually work in agriculture...There are no definitive numbers but a 2006 cluster survey by the Ministry of Public Health and Population found that 22% of Yemeni children were involved in some form of child labor.