Income maintenance programs Social security 5 Congresses 4 Government policy 2 Income distribution 2 Labor policy 2 Poor 2 Poverty 2 Agriculture and state 1 Case studies 1 Child welfare 1 Cost and standard of living 1 Employment 1 Family life surveys 1 Family policy 1 Fatherless family 1 Income 1 Labor economics 1 Negative income tax 1 Occupations 1 Old age pensions 1 Pensions 1 People with disabilities 1 Public welfare administration 1 Services for 1 Single-parent families 1 Social aspects 1 Social policy 1 Tax credits 1 Unemployment 1