Steffen Lehndorff, born 1947, Dr. rer.pol., economist. Research Fellow at the Institut Arbeit und Qualifikation (Institute for Work, Skills and Qualification / IAQ), University of Duisburg/Essen, Germany. Steffen worked as a Research Director at the Institute Work and Technology (IAT), Gelsenkirchen / Germany and later as the Head of Department on Working-Time and Work Organisation at IAQ. His research focuses on employment relations and working-time at organisational, national and international levels and includes comparative research into employment models and industrial relations systems in the European crisis.

His latest publications include
- Divisive integration. The triumph of failed ideas in Europe – revisited. ETUI, Brussels, 2015 (ed.)
- Allemagne. Un géant endormi ? Le rôle des syndicats avant et pendant la crise européenne. En: Sommaire Chronique internationale n° 143-144 - numéro spécial - Les syndicats face à la nouvelle gouvernance européenne, pp. 53-64 (2014)
- It’s a long way from norms to normality: The 35-hour week in France. In: Industrial & Labor Relations Review 67 (3), pp. 838-863 (2014)