Since the foundation of IDDRG (in 1958), Working Group Meetings were held annually. For the annual Working Group meetings, the Secretary General informed the National Secretaries of the date and venue, as well as of the themes for Working Groups 1, 2 and 3. The National Secretaries then gave this information to their National Groups.

Those wishing to contribute to the meeting sent an abstract to their National Secretary who, if it was approved, was sent to the Secretary General, who gathered all the abstracts together before meeting with the appropriate three Convenors. If the abstract was accepted by the Convenors, they informed the authors and asked for the full contribution. Then, 35 copies of the full contribution, 3 sheets double-sided maximum, were sent to the Secretary General at least 8 weeks prior to the meeting. The Secretary-General combined all contributions for all Working Groups and despatched them to the National Secretaries for copying and circulation to their selected delegate and advisors. Copies were also sent to the Executive Committee.

For the Working Group meetings, each member country or group of countries of the IDDRG was allowed 1 delegate and 2 technical advisors to each of the 3 Working Groups who could contribute freely to the discussions. Observers were allowed to attend at the discretion of the organizers.

 

Location	Year
Baarn/Hilversum, Netherlands	1961
Stockholm, Sweden	1963
Philadelphia, USA	1965
St. Germain en Laye, France	1967
Madrid, Spain	1969
London, England	1971
Zurich, Switzerland	1973
Dusseldorf, Germany	1975
Warsaw, Poland	1977
Warwick, England	1978
Liege, Belgium	1979
Tokyo, Japan	1981
Helsinki, Finland	1983
Amsterdam, Netherlands	1985
Schaffhausen, Switzerland	1987
Budapest, Hungary	1989
Pisa, Italy	1991
Linz, Austria	1993
Colmar, France	1995
Haugesund, Norway	1997
Birmingham,UK	1999
Helsinki, Finnland	2001
Bled, Slovenia	2003