This book, produced jointly by the World Bank, the University of California, Berkeley, and the WHO, aims to provide decision-makers at sub-national, national, regional and global levels with additional insights into how to address their workforce challenges rather than describe them. In order to optimize and align HRH investments and develop targeted policy responses, a thorough understanding of unique, country-specific labor market dynamics and determinants of these dynamics is critical. Policies need to take into account the fact that workers are economic actors, responsive to different levels of compensation and opportunities to generate revenue found in different sub-labor markets. Policies need to take into account the behavioral characteristics of the individuals who provide health care, but also the individuals who consume health care services and the institutions that employ health personnel. In other words, it is necessary to understand the determinants of both the supply (numbers of health workers willing to work in the health sector) and the demand for health workers (resources available to hire health workers), how these interact, and how this interaction varies in different contexts. This interaction will determine the availability of health personnel, their distribution as well as their performance levels, thus ensuring stronger health systems capable to deliver universal health coverage. The book is structured to be of use to researchers, planners, and economists who are tasked with analyzing key areas of health labor markets, including overall labor market assessments as well as and more narrow and targeted analyses of demand and supply (including production and migration), performance, and remuneration of health workers. The chapters, written by a number of internationally renowned experts on Human Resources for Health, discuss data sources and empirical tools that can be used to assess health labor markets across high-, middle- or low-income countries, but draws primarily from examples and case-studies in LMICs.