Professional integration is more difficult for a young people whose father is a labourer than for the child of a manager or intermediary professional. These differences are for the large part due to the level of qualification achieved. However, at the same level of qualification, social origin has little effect on employment: on leaving higher education, children of labourers are no more likely to be unemployed than children of managers, although on average they earn lower salaries. National origin creates a significant division: even with the same level of qualification and similar professions of the father, young people born of North African immigration have a higher risk of being unemployed than young people of European origin. Certain events in a young person's family history can also create integration difficulties.