Gender gaps in earnings persist across all regions. For every dollar men make, women make 77 cents. Closing this gap can lead to sizeable gains for economies - an estimated 160 trillion dollars in global gross domestic product (GDP) per capita. A multitude of factors contributes to this gap and this note sheds light on some of the key drivers. Effective evidence-backed policy options to close the earnings gap include providing information on work opportunities and returns to employment, training in socio-emotional skills, imparting sector-specific technical skills to address occupational segregation and adopting pay-transparency laws. The World Bank Group actively supports countries to boost women's access to better, high-quality jobs through development policy lending, advisory and analytical work, and supporting reforms to address constraining contextual factors. This note examines an array of policy options that are effective or show promise in closing gender gaps in earnings and offers some key takeaways.