In this article, we address a gap in our knowledge of workplace philanthropy. We explore the factors that distinguish givers from nongivers in workplace campaigns using observational data from a population of employees at a large, public university that has sponsored two annual giving campaigns from 2001 to 2008. The analyses correct for common issues—such as nonresponse and self-reporting biases—that frequently arise in empirical studies of philanthropy. This article is intended to supplement previous research that focuses on workplace givers. We conclude that several factors distinguish workplace givers from nongivers, such as age, gender, salary, duration of employment, and rank. This fuller exploration of workplace giving contributes to a broader understanding of philanthropic giving and its many manifestations.