8 IZA Policy Papers
IZA Policy Paper No. 197
IZA Policy Paper No. 176
IZA Policy Paper No. 156
IZA Policy Paper No. 139
shorter version forthcoming in a special issue of: International Journal of Comparative Labour Law and Industrial Relations
IZA Policy Paper No. 95
IZA Policy Paper No. 82
IZA Policy Paper No. 63
published in Korean: The HRD Review, 2013, 7 (7), 126-151