We use unpublished 1991 Statistics Canada Census data to examine male-female differences in the spatial structure of home-to-work commuting, for five occupational categories, by applying dissimilarity measures to origin-destination matrices. After allowing for the particular characteristics of Montréal, our data agree with several findings found in the literature. Regarding more specifically the spatial structure of commuting, we consider two hypotheses : (1) the behavior of women is more dissimilar from that of men of the same occupational category than from that of women of other categories; (2) women's spatial structure of commuting is more dissimilar from that of men for higher-status occupational categories than for lower-status ones. Results are mixed. While the hypotheses are not clearly rejected, they are definitely challenged.