Thirty years after feminism started to become part of mainstream academia and twenty years after the publication of Rosabeth Kanter's (1977) study of the lives of women managers in a US company, many researchers into women managers continue to draw from the knowledge she and her contemporaries created, locating their analysis in structural feminism and in the processes of asymetric power within the organization. Kanter in particular highlighted how the corporate treatment of women went beyond the activities of individuals but was part of culture in which the majority dominate and marginalize the minority and in which structures emerged to preserve the status quo.Much has changed for women managers since Kanter first published her work. Figures at that time indicated a rather poor picture. In 1976, over 96% of senior managers in the USA were men. Out of a survey of 163 American companies, over half had only 2% of women in first-level supervisory posts and in three-quarters women held only 2% of middle management and none of the top management jobs (Kanter, 1977).The situation for women managers both in the USA and in the UK has clearly improved since then, but despite the large increases in the number of women entering the labour market women still face inequalities in pay, status and level which are found even more sharply in the area of management. From the most junior manager to the most senior board-level director, men outnumber women and the situation worsens the higher up the hierarchy you go. Latest figures from the Institute of Management suggest year on year gains are small. The number of women managers in 1995 was 10.7%, up from 10.2% in 1993. They make up 3% of directors -an increase of only 0.2% over the same period. While they comprise 15.9% of section leaders they make up only 5% of the more senior function heads. Their average pay is 84% of the average male manager's pay and this disparity increases with seniority (Institute of Management, 1995).Against this background it is not surprising that studies continue to show women managers, particularly at higher levels, encountering problems and restrictions that relate almost entirely to their gender. The so-called glass ceiling may have increased in height during this time, but it exists nevertheless with various barriers limiting women's progress up the corporate hierarchy.Kanter's early work used the structural feminist paradigm to focus on barriers relating to the This paper explores the relevance of Kanter's early work on the numerical distribution of women in organizations for an understanding of the position of highly qualified women managers today. Despite the progress that women managers have made over the last twenty years, various consistencies stubbornly remain, particularly concerning the impact of the gender mix of the organization on women's progress and experience of career barriers. The results of this research on the nature of these barriers and how they vary with the numerical distribution of women are presented and discussed.