Preface: Scope of this Work
List of Tables List of Figures
1 Introduction
1.1 Concepts: 'Shadow Economy' and 'Undeclared Work'
1.2 Measurement of Undeclared Work: Macro-level Approaches
1.3 Measurement of Undeclared Work: Individual-level Approaches 1.4 Summary of Research Gaps and Research Questions 2 Measuring and Explaining Undeclared Work in Germany
2.1 Study Details: The Experiments
2.2 Empirical Results
2.3 Discussion and Conclusion 3 Item Sum: A Novel Technique for Asking Continuous Sensitive Questions
3.1 The Item Sum Technique
3.2 Experimental Design
3.3 Empirical Results 4 Validating Sensitive Questions: A Comparison of Survey and Register Data
4.1 Background
4.2 Data and Methods
4.3 Statistical Analyses
4.4 Empirical Results
4.5 Discussion and Conclusion 5 Discussion and Conclusion 5.1 Contribution
5.2 Limitations
5.3 Implications for Future Research A Appendix to Chapter 2
A.1 RRT Instructions A.2 IST Long-List Instructions A.3 ICT Instructions and ICT Lists
A.4 Prevalence Estimates Undeclared Work
A.5 Overview of Items and Operationalizations (RRT study)
A.6 Logistic Regression Models Analyzing Undeclared Work Based on Listwise Deletion A.7 Logistic Regression Models Analyzing Undeclared Work by Experimental Conditions B Appendix to Chapter 3
B.1 Regression Estimates for IST
B.2 IST Results Displayed as Regression Output C Appendix to Chapter 4
C.1 Validation Studies
C.2 Social Assistance and Entitlements in Germany Bibliography
Abstract
Zusammenfassung