In this article, we examine an important but relatively under-researched form of corporate social responsibility, namely, employer support for employee voluntary activity. Using Canadian data, we examine two questions. First, we analyze the impacts of employer support on the total number of hours volunteered and on the voluntary activities which are undertaken. Second, we examine how employer support is distributed between male and female employees. Our results indicate that employer support is associated with a greater amount of volunteer activity by (...) both men and women employees and in a wide range of voluntary activities. However, we also find that women are less likely to receive employer support than men and are less likely to receive support in the form of flexible work hours and time-off. These results are puzzling given that women typically face more binding time constraints than men. We conclude the paper by discussing how employer policies might be changed to address this finding. (shrink)