In this working paper an analysis of paid and unpaid work-time inequalities among Bolivian urban adults using time use data from 2001 household survey. A gender-based division of labour was identified not so much characterized by who does which type of work but by how much work of each type they do. There is a partial trade-off between paid and unpaid work, but such a substitution is only partial: women's entry into the labour market tends to result in a double work shift of paid and unpaid work.