Prof. Dr. Martin Gruber-Risak

Academic Advisor

Employment History

After completing his legal internships and doctorate, Prof. Dr. Martin Gruber-Risak worked for the law firm CMS.  He works as an expert and consultant for the International Labour Organization (ILO), the European Commission, ministries and provincial governments, trade unions, the Kammer für Arbeiter und Angestellte für Wien, the Austrian Economic Chambers, the Friedrich Ebert and Hans Böckler Foundations, and numerous companies; furthermore he acts as:

Main Focuses

Prof. Dr. Gruber-Risak focuses on labor and social law and the relevant effects of digitization.  He regularly appears as an expert at conferences and in the media such as ORF.

Educational & Academic Background

After studying law and completing his doctorate at the University of Vienna, Prof. Dr. Gruber-Risak habilitated in 2007 in the fields of labor and social law.  His habilitation was awarded the Leopold-Kunschak-Wissenschaftspreis and the Kardinal-Innitzer-Förderungspreis.  Since then, Prof. Dr. Gruber-Risak has taught and researched at various universities in Austria and abroad, e.g. in 2008/09 as the substitute for the Chair of Civil Law and Labor Law at the University of Passau.  He belongs to the following academic societies:

Core Functional Expertise

March 2021

‘Best Management Consultants 2021’: T. K. Hamann among the top 3 consultancies for sales, after sales, and CRM

The 2021 ranking ‘Beste Unternehmensberater [Best Management Consultants]’ by the German business magazine brand eins and the business data portal Statista has just been published.


T. K. Hamann takes a top position in this with a shared second place in the field of ‘Sales, After Sales, CRM’.  In addition, we are honored for the sector ‘Auto & Suppliers’ and the functional area ‘Strategy Development’.


We are grateful to all our clients, the entire team, and business partners who have worked with us since our founding in late 2016.  Together, we will continue to consequently pursue quality leadership in our disciplines.

For this year’s ranking, 2,334 colleagues determined the best management consultancies according to their perception by industry and functional practice area.  Subsequently, assessments were obtained from the clients.  For this purpose, 1,100 senior executives were provided with a list of the recommended consultancies for each industry and work area clients via online survey; another 234 senior executives (Head of Strategy, Head of Business Development, etc.) from DAX, M-DAX, S-DAX and Tec-DAX companies were specifically invited to participate in the survey.