Responses from working women (N=10 619) from 24 European countries (ESS R2) were analysed in this paper. The list of analysed characteristics comprised: female labour supply (measured as number of weekly hours worked) and a list of its potential determinants such as income, education, present life circumstances (children living at home, unpaid help available) and family background (whether mother was working when subject was 14) as well as beliefs regarding equal work opportunities between men and women. Results indicate that e.g. actual female labour supply does not coincide in most countries with women´s expectations. In some countries women reported to work fewer hours than they would like and in other countries they affirmed they work more hours than they would prefer. The relationship between female labour supply and selected determinants was statistically confirmed.