Data from European Union household and time-use surveys, for instance, have been used to estimate that the market value of women's unpaid work could range from one quarter to one third of a country's gross domestic product.* In developing countries, women spend on average th ree hours more per day than men on un paid work, and i n developed countries, two hours more. See abstract and section 4.3 of the publication, available from httpY/ftp.iza.org/dp5046.pdf. Available from hupY/unstats.un.org/unsd'gendet/docs/WW2015%20at%20a%20Glance.pdf.