Gregor forsker og underviser hovedsageligt inden for virksomhedskommunikation, ledelseskommunikation og PR. Senest har han været involveret i et globalt forskningsprojekt, der skal definere de universelle professionelle kompetencer, der er behov for i kommunikationsledelse. Fra 2015-2017 var Gregor formand for The Global Alliance for Public Relations and Communication Management i Lugano, Schweiz, et forbund for organisationer, der repræsenterer ca. 180.000 kommunikationsledere verden over. Han har en ph.d. i kommunikation fra Westfälische Wilhelms-Universität (Münster, Tyskland).
Før Gregor blev en del af universitetssektoren, var han managing partner hos Publicis Groupe, i øjeblikket det tredjestørste bureau inden for markedskommunikation i verden. Her var han medvirkende til stiftelsen af Publicis Public Relations (nu MSL).
Gregor er fra Holland og har gået i skole i både Nord- og Sydamerika og Sydøstasien.
„Information leaks before CEO change: financial gain and ethical cost" (co-author), Oct 2019 accepted/in press in: Journal of Communication Management
„Externalities, agency, and ethics in the big data industry: starting the debate“ (co-author), under review.
“Brand hijacking: why are campaigns and hashtags being taken over by audiences” (co-author), book chapter forthcoming
2018 in Laskin, A. (Ed.), ‘Social, Mobile, and Emerging Media Around the World: Communication Case Studies’.
„Are there global capabilities in corporate communication?“, invited speaker at Conference of the Public Relations Society of China, Huazhong, 27 October 2017.
„Public Relations in Asia“, invited speaker at Design Finland 100 Seminar, Helsinki, 31 August 2017.
„Externalities, agency, and ethics in big data transactions: starting the debate“ (co-author) at International Critical PR Conference, Barcelona, 3-4 July 2017.
„Scaling up Innovation in Business Education“, invited speaker at AACSB Asia Pacific Conference, Bangkok, 20 May 2017.
„Public Relations in the Sharing Economy“, Public Relations Review, 1/2017, 4-13 (co-author)
„What Case Studies Can Teach in International Public Relations“ (book chapter), in Valin, J. & Turk, J. (eds.) ‚Public Relations Case Studies from Around the World’, 2017.
„What is public relations research good for, anyway?“ invited keynote speaker, PRaxis conference, Mumbai, India, 24 Sept 2016.
„Geolocalization of Public Relations – International Perspectives“ invited keynote speaker at the 5th public relations international conference, Buenos Aires, Argentina, 1 Sept 2016.
„Perspectives on communication diversity. Cases from Africa and Asia“ invited keynote speaker at ProCom Day, Helsinki, Finland, 7 June 2016.
„Communication across Cultures“ opening keynote speaker at the World Public Relations Forum, Toronto, Canada, 29 May 2016
„Understanding PR in post-traditional business„ refereed paper at the research colloquium at the World Public Relations Forum, Toronto, Canada, 30 May 2016 (co-presented) \ 5 Gregor Halff, April 2018
„Measurement and Evaluation of Public Relations“, invited keynote speaker at the Russian Public Relations Forum, Moscow, Russia, 1 March 2016
„What is public relations to society? Toward an economically informed understanding of public relations“, Public Relations Review, 4/2015 (co-author)
„The Role of Communication in Emerging Economies“, invited keynote speaker at the World Conference on PR in Emerging Economies, Nairobi, November 2015
„Leadership in Communication“, invited keynote speaker at the annual conference of the Vietnamese public relations industry, Ho Chi Minh City & Hanoi, 9 & 10 January 2015
„Strategies that drive PR performance – global insights“, invited speaker at the annual conference of the Public Relations Society of Kenya, 28 November 2014
„Getting to PR leadership“ invited keynote speaker at the Public Relations Society of India, Hyderabad, 21 November 2014
„The leadership legacy of public relations“, keynote co-presenter at the World Public Relations Forum, Madrid, 23 September 2014
„Exploring the benefit of public relations to society – what can economic theory tell us?“, refereed paper at the research colloquium oft the World Public Relations Forum, Madrid, 21 September 2014 (co-authored)
“Toward an Historically Informed Asian Model of Communication“ in Public Relations Review, 3/2014 (co-author)
„Historiographies of Public Relations in Asia“ refereed paper at the Conference on the History of Public Relations, Bournemouth, July 2013 (co-authored)
“Starting Up Reputations in Emerging Asian Markets“ in Asian Management Insights, December 2014 (co-authored)
“Divided We Stand: Defying Hegemony in Theory and Practice?“ in Public Relations Review, 3/2013 (co-authored)
“The Presentation of CEOs in Economic Downturn“ in Corporate Reputation Review, 3/2013.
“Communication in the Business Curriculum“, invited seminar series at AACSB since 2013.
“Trusting Gangbangers in War and Peace”, case study and teaching note published by ecch/the case centre, 2013
“Teaching Public Relations to Students with a Confucian Cultural Background“ in Asia Pacific Public Relations Journal, 4/2012.
“Divided We Stand: Defying Hegemony in Theory and Practice”, refereed paper at the World Public Relations Forum (Research Colloquium), Melbourne, November 2012 (co-authored) \ 6 Gregor Halff, April 2018
“Richard Wagner’s Heritage – 200 Years of Battle over Business”, case study and teaching note published by ecch/the case centre, 2012.
“Professionalism of Communicators in Southeast Asia”, in Public Affairs Asia, May 2011.
“The Arcelor-Mittal Steel Merger Communications”, in Benoliel, M. (ed.): Negotiation Excellence, Singapore, 2011.
“Codes of Conduct – Managing the Contradictions between Local and Corporate Norms”, in Journal of Communication Management, 4/2010.
“The Changed PR-landscape” (panelist), Asia-Pacific PR&Media Congress 2010, Singapore, January 2010.
“CEO-Communication”, Asia-Pacific PR&Media Congress 2010, Singapore, January 2010.
"Die Sprache der Globalisierung“ (The Language of Globalisation), in: Moss, C. (ed.): Die Sprache der Wirtschaft (The Language of Business), Wiesbaden, 2009.
“How and What to Communicate When ‚Western’ Corporations Face Take-Over Bids from Emerging Markets”, paper presented at the Association for Business Communication, Asia-Pac. Conference 2008, Singapore.
“Persuading 380 million people to hand over their money: the Euro campaign 2002”, key note speech at the annual general assembly of the Public Relations Institute of New Zealand, 2006, Auckland.
(BOOK, co-author) “Innovative Fernsehwerbung” (Innovations in TVAdvertising), Saarbruecken, 2007.
(BOOK, co-author) “Product Placement in Computerspielen. Chancen und Entwicklungen” (Product Placement in Online-Games. Opportunities and Developments), Saarbruecken, 2007.
“Globalisation from the Boardroom. An International Comparative Analysis of Annual Reports”, paper presented at the Association for Business Communication, Asia-Pacific Conference 2007, Hong Kong.
“International Communication“, in: Woyke, W. (ed.), Handwörterbuch Internationale Politik (Encyclopedia of International Politics), Opladen, 2007, 2010, 2012.
“Two-Step-Flow-of-Communication“, in: Weischenberg, S. (ed.): Handbuch Journalismus und Medien (Encyclopedia of Journalism and Media), Constance, 2005.
(BOOK) “Die Malaise der Medienwirkungsforschung” (The Malady of Media Effects Research), Opladen,1998.