Previous research has demonstrated the critical role communication plays in a group's ability to recognize its expert members. This study looks broadly at the different forms of communication that might influence expertise recognition and considers how structural, relational, and communicative factors are related to individuals' success in having their expertise recognized by other group members. In addition, we advance a view of expertise recognition in terms of expertise sharing and consider the circumstances under which an individual's self-perceived expertise is likely to match the perceptions of other group members. Drawing on survey data from 99 employees at a financial services company, we find that it is communication practices, and not structural influences, that primarily relate to group members having their expertise recognized by coworkers. The findings extend theory that views attributions of individuals' expertise in organizations as a communicative phenomenon that emerges through work practices.