How can governments ensure that women have the same employment and entrepreneurship opportunities as men? One important step is to level the law so that the rules for operating in the worlds of work and business apply equally regardless of gender. Women, Business and the Law 2018, the fifth edition in a series, examines laws affecting women's economic inclusion in 189 economies worldwide. It tracks progress that has been made over the past two years while identifying opportunities for reform to ensure economic empowerment for all. The report updates all indicators as of June 1, 2017 and explores new areas of research, including childcare, pensions, and financial inclusion. By measuring where the law treats men and women differently, Women, Business and the Law shines a light on how women's incentives or capacity to work are affected by the legal environment and provides a basis for improving regulation.