Portugal 56 Journal Article 18 Labor law 15 Demographic Factors 12 Developed Countries 12 Europe 12 Population 12 Population Dynamics 12 Southern Europe 11 English Abstract 10 Migration 7 International Migration 6 Collective bargaining 5 Economic Factors 5 Historical Survey 5 Angola 4 EU-Staaten 4 Historical Article 4 Industrie 4 Brasilien 3 Demography 3 Employment contracts 3 Globalisierung 3 Judges & magistrates 3 Landwirtschaft 3 Migration Policy 3 Policy 3 Population Characteristics 3 Population Policy 3 Social Policy 3