The World Health Organization (WHO) projects a global shortfall of 18 million health workers by 2030, mostly in low- and lower-middle-income countries. Contributing to the global deficit are chronic under-investment in education and training of health workers; workforce migration; an aging health workforce; rapid increases in chronic diseases; and inability to track existing human resources using health information systems. Health care worker shortages are compounded by the increased portability and virulence of infections. Rapid population growth, climate change, deforestation, international travel, migration, poverty, and social inequality have dramatically increased the risk of pandemics and highlighted the need for skilled health workforce to effectively respond to emerging health threats. This is evident now more than ever as COVID-19 exacerbates health inequity and barriers to access, and further strains the already fragile health systems in many countries.