This article presents a case study of Wisdom Microfinance Institution (WISDOM) and examines how community workers were used to mitigate the exclusion of groups vulnerable to marginalization. By taking advantage of its relationship with World Vision Ethiopia (WVE) and collaborating in its lending processes, WISDOM was able to make itself more accessible to orphans and vulnerable children (OVC) caregivers in two major ways. First, the involvement of WVE community workers in forming community banks for WISDOM served to include more OVC caregivers than anyone had realized at the time. Second, collaborating with WVE community workers in monitoring clients helped WISDOM to gain vital information that led to more effective monitoring. Copyright © 2011 John Wiley & Sons, Ltd.