Arbitrator in ICC arbitration on price revision in gas sales contracts.
Arbitrator in ICC arbitration on construction contracts (special purpose vessel).
1 week course with the "Harvard team".
Extensive practice as mediator in commercial disputes from 1988.
Extensive speaking engagements, nationally and internationally, mostly on issues of contract law, mediation, arbitration and offshore safety.
Chairman of a committee appointed by the Minister for Oil and Energy to investigate cost overruns in Norwegian offshore development projects in 1994 - 1998 ("Investeringsutvalget" 1998 - 1999), published in NOU 1999: 11.
Moderator in negotiations between construction industry and oil companies to establish agreed standard contracts for offshore development projects (i.a. NF 92/05/07, NTK 2000/05/2007, NSC 05) from 1989.
Chairman of the committee for revising the Norwegian General conditions of contract concerning design and building (NS 8407), 2008 - 2011.
Visiting scholar at the University of Washington School of Law, Seattle, USA, 1991 - 1992.
Dean of the Faculty of Law, University of Oslo, 2001 - 2003.
Head of Department of Petroleum Law, University of Oslo, 1989 - 2001 and from 2009.
Co-editor of "Norsk Lovkommentar" (complete Norwegian annotated acts), 1992 - 2010.
Professor at the Faculty of Law, University of Oslo from 1989.
Acting Justice, the Norwegian Supreme Court (September 2005 - July 2006 and January - July 2008).
Counsel, Legal department Norsk Hydro AS, Oslo, 1984 - 1988.
Assistant professor and "officer in charge", Scand. Institute of Maritime Law, Department of Petroleum Law, 1981 - 1984.
Assistant District judge, Arendal, 1979- 1981.
Research assistant, Scandinavian Institute of Maritime Law, University of Oslo, 1977 - 1979.
Several articles 1978 - 2012.
Co-arbitrator in ad hoc arbitrations.
Supervisor for Master thesis.
Co-arbitrator in ad hoc arbitration re rig contracts.
Co-arbitrator in ad hoc arbitration re FPSO contracts.
Extensively writing (books, articles) on Norwegian standard construction contracts and general issues of construction contracts.
(Co-)arbitrator in ad hoc arbitrations re offshore facilities. Co-arbitrator in ad hoc arbitration on modification work re rigs, FPSOs, vessels.
Supervisor to Master thesis.