Indonesia missing due to lack of information on formality status; urban China missing due to limited sample size; the analysis on India is confined to all workers for whom data on social security contributions is available (this effectively excludes self-employed workers and family workers). Panel B: OECD calculations based on national household and labour force surveys and the EU-SILC national files (Turkey). On the measurement of inequality", Journal of Economic Theory, Elsevier, vol. The role of constraint vs choice”, Annals of Economics and Statistics, forthcoming.