The name of the Union is: “Progressive Union of Finiki SAINT TRINITY” with its clubhouse stated in Finiki. It was established on 24/4/1977. It is administrated from a board of 5 members and has 96 members.

The goal of the Union is the achievement of cooperation between the church, family and School for the synchronized education of young people, for the growth and development of the church, family and national conscience of its members. They look after the uplift of the spiritual standard of the children of the community as well as the athletic group of young people. It organizes cultural exhibits, excursions, lectures, meetings and other spiritual and educational activities. Orderly, it cooperates with other Unions of the Municipality to organize exhibits and meetings.

The Union is founded with in the permissible limits and from the Municipality of Asopos.