Concentration of women and men in different grades, levels of responsibility or positions.
See also: horizontal segregation
(1) European Commission (1998). 100 Words for Equality: A Glossary of Terms on Equality between Women and Men; (2) Bettio, F., and Verashchagina, A. (2009). Gender Segregation in the Labour Market. Root Causes, Implications and Policy Responses in the EU.