Certain professions are distinctly more feminised than others. Such employment disparities between men and women can result in couples composed of two people from different social backgrounds. Couples where the man holds a higher social status than his partner are more the result of such disparities rather than of personal choice. Homogamy, or the union of two people from the same social group, is still just as important, and concerns the entire population, even if it is much more marked amongst farmers and managers than white-collar employees. Education levels, however, affect homogamy levels within the social group: in contrast with labourers, homogamy levels amongst managers increase with qualification levels. Marriage, couple status, and the age at which the couple began the relationship all have very little bearing on homogamy. However, people with a social status similar to that of their father are more likely to choose a partner from the same social group.