Over the past several decades, charitable solicitations in the workplace have played an increasing role in the fundraising strategies of nonprofit organizations. Although many studies have examined the factors that influence overall charitable giving, very few studies have focused on giving when asked to donate in the workplace. This paper examines the determinants of charitable giving in and outside of the workplace in addition to the role of individual and firm-level characteristics. The study is based on one of the largest surveys of workplace giving including unique information on both workplace giving and overall charitable giving for 6000 employees in the USA. Specific factors uniquely influence charitable giving in the workplace. An employee's personal level of confidence in the nonprofit sector is strongly likely to influence workplace donations. At the firm level, an organization's size and industry also affect the presence of workplace campaigns and giving trends. Copyright © 2011 John Wiley & Sons, Ltd.