Labor economics 300 Labor force-- Labor economics 59 Labor laws and legislation 54 Economics 32 Labor market 31 Industrial relations 29 Labor supply 29 Labor unions 25 Agricultural laborers 24 Labor 24 India 21 Women 20 Sexual division of labor 19 Working class 18 Child labor 15 Emigration and immigration 14 Labor contract 14 Labor discipline 13 Labor policy 12 Labor economics--Labour management 11 Labor movement 11 Employment 10 History 10 Labor mobility 10 Migrant labor 10 Dissertations, Academic (Ph.D) 9 Labor Economics 9 Manpower policy 9 Sex discrimination in employment 9 Social conditions 9