The operations and management of the Union Internationale des Œnologues are subject to the terms of the organisational charter and the internal regulations, on the basis of which the executive committee consists of a chairman, two vice-chairmen, a secretary general and a treasurer. These are elected by the general meeting of delegates, as designated by the various national associations. The senior office holders and delegates remain in office for three years.
The first chairman of the Union Internationale des Œnologues was Gabriel Humeau from France, and the Spaniard Louis Albalate was its first secretary general. Humeau stepped down as chairman in 1973 after four periods in office, during which he amalgamated the various national associations and presented the UIŒ to the various international institutions.
His successor, Jacques Puisais, headed the body until 1981, the year when the Italian Ezio Rivella was elected chairman in Bordeaux, and went on to serve three periods in office, before being replaced by Pierre Bedot of France, who was struck down by a serious illness and died a few months later. In the two years that followed, the first vice-chairman, the Spaniard Ramon Viader, acted in his place. In Barcelona in 1993, Dominique Foulon of France was elected chairman, an office he passed on to the Italian Pietro Pittaro in 1997. This latter remained in office for three years, and was replaced by the Spaniard Vicente Sanchez-Migallon in Zurich in 1999. In Bordeaux in 2002, Migallon was replaced by the Italian Giuseppe Martelli. In December 2008, during the General Assembly held in Bordeaux (France), Martelli passed the role of president onto the Frenchman Serge Dubois, once again confirmed for the three-year period 2012/2014 in December 2011.
At the same time, after Albalate, Daville Hourmat was elected secretary general, to be replaced in 1970 by fellow-Frenchman Albert Roquet, who was succeeded in 1977 by the Spaniard Isabel Mijares. In 1989, Giuseppe Martelli of Italy was elected to the post in Thessalonika, to be followed by Mike Favre of Switzerland in 1999. The Frenchman Serge Dubois took over the post in 2002. In December 2008 the Slovenian Iztok Klenar was elected Secretary. Three years later he passed this role onto Juan Gómez Benitez (Spain).