Human resources for health (HRH) is a relatively young field. As such, less is known about how to successfully implement health workforce interventions than is known about other types of health interventions (e.g., service delivery) with a longer history of implementation. Presented at the Second Global Symposium on Health Systems Research in Beijing on November 2, 2012, this poster describes results from a qualitative study with staff from USAID-funded HRH projects in Kenya, Uganda, and Tanzania led by IntraHealth International, which was conducted in recognition of the need for a more systematic approach to understanding the challenges and success factors in implementing HRH interventions.