Women make up almost half of the world’s working-age population of nearly 5 billion people. But only about 50 percent of those women participate in the labor force, compared with 80 percent of men. Not only is female labor force participation lower, but women who are paid for their work are disproportionately employed in the informal sector—especially in developing economies—where employers are subject to fewer regulations, leaving workers more vulnerable to lower wages and job losses. Furthermore, even in the formal sector, women doing the same work and having the same level of education earn less than their male counterparts. And, because women generally spend less time in the paid labor market, they have lower pensions and face a higher risk of poverty in old age. Among those who do work, few rise to senior positions or start their own businesses. Women also shoulder a higher share of unpaid work within the family, including childcare and domestic tasks, which can limit their opportunity to engage in paid work and constrain their options when they do.