This article is a longitudinal analysis of the relation between gendered labour divisions and new data processing technologies at the Dutch Central Bureau of Statistics. Following social-constructivist and evolutionary economic approaches, the authors hold that the relation between technology and work organization is a two-way process. This means that technology does not only affect the relations between men and women at work, but that these relations also influence technological choices. The proportional numbers of men and women on the labour market (...) and changing conceptions of which work is deemed appropriate for women have been important factors in the strongly varying extent to which women participated in office work. They have also been important factors in determining the course of technological development. Shortages of women on the labour market have even determined search heuristics for new technological solutions in specific directions. (shrink)