As regards the age ofthe children, 28% of women in the formal sector and 32% in the informal sector have children aged under 5, and 21% of formal and 29% of informal women have children aged between 6 and 14. This is evidence for a key factor driving labour market segmentation, which is explored in Casal (2011). When the husband’s education is taken, it transpires that significantly more informal-sector women than formal-sector women married husbands with a low level of education, with significantly more formal-sector women marrying highly educated men.