ORBEL conferences are organized yearly, in January, and bring together most of the people concerned with operations research and quantitative techniques for decision making in Belgium; they also attract a number of specialists from the neighboring countries.

The ORBEL conferences consist in invited lectures delivered by prominent foreign specialists and practitioners on topics of general interest; more specialized contributed papers are presented in parallel sessions by young researchers. The winner of the ORBEL award for the best master thesis in operations research is also announced at the conference and invited to present his/her work there.

The 20th ORBEL conference took place in Gent in January 2006, and the next one will take in Luxembourg in January 2007.

Workshops on a particular theme. These one-day meetings are devoted to a single topic; the invited lectures are selected in order to provide an overview of recent and important developments in some field of interest.

In recent years, workshops have been devoted to Discrete-event simulation, Fuzzy Logic and Constraint Programming, Data mining and Operations Research and Optimization in Engineering.

The journal 4OR, Quarterly Journal of the Belgian, French and Italian Operations Research Societies . Started in 2003, this refereed joint journal of three national Operations Research societies is offered free to all their members. It is published by Springer.

See more detailed information on the 4OR webpage, on the Springer journal home page or look up the table of contents.

The former journal JORBEL stopped after the last volume 41 (2001). This refereed quarterly journal published scientific contributions ; special issues were devoted to particular topics and contained a review or tutorial paper. The most recent special issues were centered on General Heuristics, Production Management, Constraint Programming; a collection of tutorial lectures presented at the FRANCORO conference in 1996 also appeared.

A project codenamed Borsalino is currently aiming at putting the complete archives of JORBEL in electronic format freely available online.