• BPMN'12 - 4th Int'l Workshop on the Business Process Model and Notation
  Vienna, Austria, 12-13 September, 2012
• EMISA'12 - Der Mensch im Zentrum der Modellierug
  Vienna, Austria, 12-13 September, 2012
• ProHealth'12 - 5th Int'l Workshop on Process-oriented Information Systems in Healthcare (PC Chair)
  Workshop held in conjunction with BPM'12 conference
  Tallinn, Estland, 3 September 2012
• BPI'12 - 8th Int'l Workshop on Business Process Intelligence
  Workshop held in conjunction with BPM'12 conference
  Tallinn, Estland, 3 September 2012
• PMC'12 - 2nd Int'l Workshop on Process Model Collections
  Workshop held in conjunction with BPM'12 conference
  Tallinn, Estland, 3 September 2012
• ER-BPM'12 - 3rd Int'l Workshop on Empirical Research in Business Process Management
  Workshop held in conjunction with BPM'12 conference
  Tallinn, Estland, 3 September 2012
• rBPM'12 - 3rd Int'l Workshop on Reuse in Business Process Management
  Workshop held in conjunction with BPM'12 conference
  Tallinn, Estland, 3 September 2012
• TAProViz'12 - 1st Int'l Workshop on Theory and Applications of Process Visualization
  Workshop held in conjunction with BPM'12 conference
  Tallinn, Estland, 3 September 2012
• DAB'12 - 1st Int'l Workshop on Data- & Artifact-centric BPM
  Workshop held in conjunction with BPM'12 conference
  Tallinn, Estland, 3 September 2012
• HC-PAIS'12 - 1st Int'l Workshop on Human-Centric Process-Aware Information Systems
  Workshop held in conjunction with CAiSE'12 conference
  Gdansk, Poland, 26 June 2012
• EVL-BP'12 - Int'l Workshop on Evolutionary Business Processes 
  Workshop held in conjunction with CAiSE'12 conference
  Beijing, China, 10 September 2012
• KiBP'12 - 1st Int'l Workshop on Knowledge-intensive Business Processes
  Workshop held in conjunction with the KR'12 conference
  Rome, Italy, 15 June 2012
• EMISA'11 - 4th Int'l Workshop on Enterprise Modelling and Information Systems Architectures
  Hamburg, Germany, September 22-23, 2011
• BPMN'11 - 3rd Int'l Workshop on the Business Process Model and Notation
  Lucerne, Switzerland, 21-22 September, 2011
• ProHealth'11 - 4th Int'l Workshop on Process-oriented Information Systems in Healthcare (PC Chair)
  Workshop held in conjunction with BPM'11 conference,
  Clermont-Ferrand, France, August 29, 2011
• BPI'11 - 7th Int'l Workshop on Business Process Intelligence
  Workshop held in conjunction with BPM'11 conference
  Clermont-Ferrand, France, August 29, 2011
• PMC'11 - 1st Int'l Workshop on Process Model Collections 
  Workshop held in conjunction with BPM'11 conference
  Clermont-Ferrand, France, August 29, 2011
• ER-BPM'11 - 2nd Int'l Workshop on Empirical Research in Business Process Management
  Workshop held in conjunction with BPM'11 conference
  Clermont-Ferrand, France, August 29, 2011
• CAiSE'11 Forum - Forum of the 23rd Int'l Conference on Advanced Information Systems Engineering (Programme Board Member)
  London, England, June 20-24, 2011
• EVL-BP'11 - 4th Int'l Workshop on Evolutionary Business Processes
  Workshop held in conjunction with EDOC'11 conference
  Helsinki, Finland, August 28-29, 2011
• HamIS'11 - Int'l Workshop on Health Ambient Information Systems
  Gramado, Brazil, 17 May 2011
• BPMN'10 - 2nd Int'l Workshop on the Business Process Model and Notation
  Potsdam, Germany, October 13-14, 2010
• BPI'10 - 6th Int'l Workshop on Business Process Intelligence
  Workshop held in conjunction with BPM'10 conference
  Hoboken, New Jersey, USA, 13 Septemer 2010
• IW-PL'10 - 1st Int'l Workshop "Process in the Large"
  Workshop held in conjunction with BPM'10 conference
  Hoboken, New Jersey, USA, 13 Septemer 2010
• rBPM'10 - 1st Int'l Workshop on Reuse in Business Process Management
  Workshop held in conjunction with BPM'10 conference
  Hoboken, New Jersey, USA, 13 Septemer 2010
• WGBP'10 - Int'l Workshop on Goal-based Business Process Engineering
  Workshop held in conjunction with EDOC'10 conference
  Vitoria, ES, Brazil, Otober 2010
• DDBP'10 - 3rd Int'l Workshop on Dynamic and Declarative Business Processes
  Workshop held in conjunction with EDOC'10 conference
  Vitoria, ES, Brazil, Otober 2010
• BPMDS'10 - 11th Int'l Workshop on Business Process Modeling, Development and Support
  Workshop held in conjunction with CAiSE'10 conference
  Hammamet, Tunisia, 7-8 June 2010
• ER-POIS - 1st Int'l Workshop on Empirical Research in Process-Oriented Information Systems
  Workshop held in conjunction with CAiSE'10 conference
  Hammamet, Tunisia, 7-8 June 2010
• TCoB'10 - 5th Int'l Workshop on Technologies for Context-Aware Business Process Management
  Workshop held in conjunction with ICEIS'10 conference
  Funchal, Portugal, 8 June 2010
• SOC-LOG'10 - 2nd Int'l Workshop on Service-Oriented Computing in Logistics
  Workshop held in conjunction with ICSOC'10 conference
  San Francisco, CA, USA, December 2010
• BPMDS'09 - 10th Int'l Workshop on Business Process Modeling, Development and Support
  CAiSE'09 Workshop, Amsterdam, The Netherlands; June 8-9, 2009
• EMISA'09 - 3rd Int'l Workshop on Enterprise Modelling and Information Systems Architectures
  GI SIG EMISA Workshop, Ulm, Germany; September 10-11, 2009
• DDBP'09 - 2nd Int'l  Workshop on Dynamic and Declarative Business Processes
  Auckland, New Zealand, September 2009
• edBPM'09 - 2nd Int'l Workshop on Event-Driven Business Process Management
  Workshop held in conjunction with BPM'09 conference,
  Ulm, Germany, 7 September 2009
• ER-BPM'09 - 1st Int'l Workshop on Empirical Research in Business Process Management
  Workshop held in conjunction with BPM'09 conference,
  Ulm, Germany, 7 September 2009
• CBP'09 - 3rd International Workshop on Collaborative Business Processes
  Workshop held in conjunction with BPM'09 conference,
  Ulm, Germany, 7 September 2009
• BPI'09 - 5th Int'l Workshop on Business Process Intelligence
  Workshop held in conjunction with BPM'09 conference,
  Ulm, Germany, 7 September 2009
• ProHealth'09 - 3rd Int'l Workshop on Process-oriented Information Systems in Healthcare
  Workshop held in conjunction with BPM'09 conference,
  Ulm, Germany, 7 September 2009
• M4BPS'09 - IEEE Int'l Workshop on Management for Business Processes and Services
  CEC'09 Workshop, Vienna, Austria;  July 20, 2009
• TCoB'09 - 4th Int'l Workshop on Technologies for Context-aware Business Process Management
  ICEIS'09 Workshop, Milan, Italy; May 6-7, 2009
• Progility'09 - 4th IEEE Workshop on Agile Cooperative Process-aware Information Systems
  WETICE'09 Workshop, Groningen, The Netherlands; June 29 - July1, 2009
• EHST'09 - 3rd Int'l Workshop on e-Health Services and Technologies
  Sofia, Bulgaria; July 28, 2009
• MSI'09 - Workshop on Model-driven Development, Service-oriented Architecture, IT-Management
  Oldenburg, Germany; October 6-7, 2009
• I-WEST'09 - 3rd Int'l Workshop on Enterprise Systems and Technology
  Sofia, Bulgaria; July 29-30, 2009
• BPD'08 - 4th International Workshop on Business Process Design
  Workshop held in conjunction with BPM'08 conference,
  Milan, Italy, 1 September 2008
• BPI'08 - 4th Int'l Workshop on Business Process Intelligence
  Workshop held in conjunction with BPM'08 conference,
  Milan, Italy, 1 September 2008
• MDE4BPM - 1st International Workshop on Model-Driven Engineering for Business Process Management
  Workshop held in conjunction with BPM'08 conference,
  Milan, Italy, 1 September 2008
• CBP'08 - 2nd Int'l Workshop on Collaborative Processes
  Workshop held in conjunction with BPM'08 conference,
  Milan, Italy, 1 September 2008
• PM4HDPS - 1st International Workshop on Process Management for Highly Dynamic and  Pervasive Scenarios
  Workshop held in conjunction with BPM'08 conference,
  Milan, Italy, 1 September 2008
• ProHealth'08 - 2nd Int'l Workshop on Process-oriented information systems in Healthcare (PC Chair)
  Workshop held in conjunction with BPM'08 conference,
  Milan, Italy, 1 September 2008
• DDBP'08 - First International Workshop on Dynamic and Declarative Business Processes
  Munich, Germany, September 2008
• ProGility'08 - 3rd IEEE Workshop on Agile Cooperative Information Systems
  WETICE'08 Workshop, Rome, Italy, France, June 23-25, 2008

• EHST'08 - 2nd Int'l Workshop on e-Health Services and Technologies 
  Porto, Portugal; July 7, 2008

• TCoB'08 - 3rd Int'l Workshop on Technologies for Context-Aware Business Process Management
  ICEIS'08 Workshop, Barcelona, Spain, 13 June 2008
• MSI'08 - 2nd Workshop on MDD, SOA and IT Management
  OFFIS, Oldenburg, Germany; September 24, 2008
• I-WEST'08 - 2nd Int'l Workshop on Enterprise Systems and Technology
  Enschede, The Netherlands; May 23, 2008
• XML4BPM'08 - 4th Workshop on XML Integration and Transformation for Business Process Management
  Munich, Germany, February 2008
• EMISA'07 - 2nd Int'l Workshop Enterprise Modeling and Information System Architectures  (PC Chair)
  GI SIG EMISA Workshop, St. Goar, Germany, October 8-9, 2007 
• ProHealth'07 - 1st Int'l Workshop on Process-oriented Information Systems in Healthcare  (PC Chair) 
  Workshop held in conjunction with BPM'07 conference,
  Brisbane, Australia, September 2007
• BPI'07 - 3rd Int'l Workshop on Business Process Intelligence
  Workshop held in conjunction with BPM'07 conference,
  Brisbane, Australia, September 2007
• BPD'07 - 3rd Int'l Workshop on Business Process Design
  Workshop held in conjunction with BPM'07 conference,
  Brisbane, Australia, September 2007
• CBP'07 - 1st Int'l Workshop on Collaborative Business Processes
  Workshop held in conjunction with BPM'07 conference,
  Brisbane, Australia, September 2007
• SWSP'07 - 4th Int'l Workshop on Semantic Web for Services and Processes
  ICWS'07 Workshop, Salt Lake City, USA, July 9-13, 2007
• ProGility'07 - 2nd IEEE Int'l Workshop on Agile Cooperative Process-Aware Information Systems  (PC Chair)
  WETICE'07 Workshop; Paris, June 18-20, 2007
• TCoB'07 - 2nd Int'l Workshop on Technologies for Collaborative Business Process Management (PC Chair)
  ICEIS'07 Workshop, Funchal, Portugal, June 2007
• BPMDS'07 - 8th Int'l Workshop on Business Process Modeling, Development, and Support
  CAiSE'07 Workshop, Trondheim, Norway, June 2007
• MSI'07 - Workshop MDD, SOA, and IT Management
  Oldenburg, Germany, April 2007
• EAI'06 - 3rd GI Workshop on Enterprise Application Integration
  Dortmund, Germany, December 2006
• EMISA'06 - Workshop Methoden, Konzepte und Technologien für die Entwicklung von dienstebasierten Informationssystemen
  GI SIG EMISA Workshop, Hamburg, Germany, October 2006
• BPD'06 - 2nd Int'l Workshop on Business Process Design
  Workshop held in conjunction with BPM'06 conference,
  Vienna, Austria, September 2006
• DPM'06 - 1st Int'l Workshop on Dynamic Process Management  (PC Chair)
  Workshop held in conjunction with BPM'06 conference,
  Vienna, Austria, September 2006
• BPOKI'06 - Special Track on Business Process Oriented Knowledge Infrastructures at I-Know'06
  Graz, Austria, September 2006
• ProFlex'06  - 1st IEEE Workshop on Flexibility in Process-aware Information Systems  (PC Chair)
  WETICE'06 Workshop, Manchester, UK, June 2006
• TCoB'06 - 1st Int'l Workshop on Technologies for Collaborative Business Process Management (PC Chair)
  ICEIS'06 Workshop, Paphos, Cyprus, May 2006
• Workshop on Information Integration in Healthcare Applications
  EDBT'06 Workshop, Munich, Germany, March 2006
• XML4BPM'06 - 3rd Workshop XML Integration and Transformation for Business Process Management
  Passau, Germany, Feb 2006
• ISOBPI'05 - Int'l Workshop on Service-Oriented Business Processes Integration
  ICSOC'05 Workshop, Amsterdam, The Netherlands, December 2005.
• DWP'05 - Int'l Workshop on Dynamic Web Processes
  ICSOC'05 Workshop, Amsterdam, The Netherlands, December 2005.
• TES'05 - 6th VLDB Workshop on Technologies for E-Services
  VLDB'06 Workshop, Trondheim, Norway, Sep 2-3, 2005
• EMISA'05 - 1st Int. Workshop Enterprise Modeling and Information System Architectures
  ER'05 Workshop, Klagenfurt, Austria, Oct 24-25, 2005
• BPS'05 - Int'l Workshop on Business Processes and Services
  BPM'05 Workshop, Nancy, France, Sep 5, 2005
• EAI'05 - 2nd GI-/GMDS Workshop Enterprise Application Integration (PC Chair)
  Marburg, Germany, June, 2005
• XML4BPM'05 - 2nd GI Workshop on XML for Business Process Management
  BTW'05 Workshop, Karlsruhe, Germany, Febraury 2005.
• GPA'04 - Workshop "Geschäftsprozessorientierte Architekturen"  (PC Chair)
  Informatik'04 Workshop, Ulm, Germany, September 2004
• EMISA'04 - Information Systems in E-Business and E-Government
  GI SIG EMISA Workshop, Luxemburg, Oct 6-8, 2004
• Informatik'04 - Workshop Program Commitee of the 23th Annual Conference of the German Computer Society (GI)
  Ulm, September 2004
• EAI'04 - GI-Workshop Enterprise Application Integration (PC Chair)
  Oldenburg, Germany, February 2004
• WES’03 - Int’l Workshop on "Web Services, e-Business, and the Semantic Web
  CAiSE'03 Workshop, Velden, Austria, June 16-17, 2003
• EAI'03 - Spring Conf. Enterprise Architecture und Enterprise Application Integration
  St. Gallen, May 28, 2003
• GI Workshop on Enterprise-wide and Cross-Enterprise Workflow Management (PC Chair)
  Informatik'99 Workshop, Paderborn, Germany, October 1999