Peneff's (1988) ethnographic study of interviewers of the Institut National de la Statistique et des Etudes Economiques (INSEE) provides rich insight into how the institutional history and administrative structure of INSEE impacts on data collection in the field. In particular, it documents how and why interviewers deviate from the rules and interviewing procedures established by INSEE. As an idiographic study of INSEE, Peneffs is an interesting "peek behind the veil" of data collection.