(Polish Episcopal Conference).
In the Polish Episcopal Conference, Bishop Marczak serves as a member of the Commission for the Doctrine of the Faith, a member of the Council for Youth Pastoral Care and a delegate of the Polish Bishops’ Conference for Academic Pastoral Care. As Secretary General, he is a member of the Presidium of the Polish Episcopate. The Secretary General of the Polish Episcopate is also an ex officio member of the Permanent Council and a member of the Council of the St. Foundation. Józefa KEP, a member of the Council of the Joy of Love Foundation and a member of the Mixed Commission of Bishops – Higher Superiors of Institutes of Consecrated Life and Societies of Apostolic Life.