Labor mobility Labor supply 12 Migration, Internal 12 Manpower policy 5 Labor market 4 Case studies 3 Congresses 3 Economic conditions 3 Economic integration 3 Employment 3 Migrant labor 3 Working class 3 Economic aspects 2 Employees 2 Industrial workers 2 Industries 2 Job vacancies 2 Labor costs 2 Mathematical models 2 Occupational mobility 2 Pensions 2 Regional planning 2 Rural-urban migration 2 Social conditions 2 Unemployment 2 Wages 2 Absenteeism (Labor) 1 Alien labor 1 Alumni and alumnae 1 Attitudes 1