Although the concept of workaholism in organizations has received considerable attention, our understanding of it based on research evidence is limited. This results from the absence of both suitable definitions and measures of the concept. This study, using measures developed by Spence and Robbins (1992), examines gender differences in a predominantly white managerial sample-in three workaholism components and workaholic job behaviors among managers and professionals. Although females and males were found to differ on many personal and situational demographic characters, they were similar on the three workaholism components: work involvement, feeling driven to work, and work enjoyment. Females reported higher levels of particular workaholic job behaviors (e.g., perfectionism, job stress) likely to be associated with lower levels of satisfaction and well-being.