In 1980 he took a position as secretary of the Composers Union which allowed him better opportunities for composition.

Finally I went to the Composers Union and explained my position.

The structure of the Composers Union has at various times included:

He had difficulty finding another job, and was ostracized by the new Union of Composers.

The next day I was expelled from the Union of Composers.

He has been a member of the Union of Greek Composers, since 1997.

In 1969 Rybnikov was admitted to the Union of Composers.

From 1967 to 1968 he was head of the Composers Union of Ukraine.

Since 2011, he is president of the Union of Belgian Composers.

From 1952 to 1955, he was the chairman of the Armenian Union of Composers.