Occupational mobility Social mobility 14 History 6 Labor supply 6 Career development 5 Social conditions 5 Economic conditions 4 更多 ... Labor mobility 4 Social classes 4 Brain drain 3 College teachers 3 Education 3 Emigration and immigration 3 Government policy 3 Inner cities 3 Labor market 3 Social problems 3 Urban poor 3 Career changes 2 Education, Secondary 2 Effect of education on 2 Employment 2 Executives 2 Faculty 2 High school students 2 Immigrants 2 Income 2 Manpower policy 2 Mid-career 2 Middle class 2 少 ...