In this research note, we examine the nature of, and influences on, parliamentary oversight in Ghana. We find that while macro-institutions are important when examining good governance and legislative effectiveness, meso-level institutions (such as oversight tools) are more important than previously acknowledged. We also detect a positive relationship between an increase in legislative oversight facilities and the reputation of parliament and its members, the legitimacy of democracy and political institutions, and the success in curbing corruption. And finally, we confirm that the successful functioning of institutions depends on the presence or absence of specific contextual factors. In the case of Ghana, these factors are a relatively low level of partisanship at the committee level, parliament's ability to find alternative sources of information, and the demand for good governance.