L’Osservatore Romano announced the members of the Commission for bishops and government of dioceses on 30 July 1960.
Three bishop members of the Commission had direct experience of the jocist movements:
Archbishop Emile-Maurice Guerry of Cambrai, who had helped found the JOC and other movements in Grenoble, his diocese of origin. He had also written widely on the theology of Catholic Action.
Bishop Georges-Léon Pelletier of Trois Rivières had been a Catholic Action in Montreal prior to his appointment as a bishop;
Bishop Pierre Veuillot of Angers had worked with Montini at the Vatican Secretariat of State before becoming a bishop.
The sociologist-priest Canon Fernand Boulard had long experience with the French JAC and carried several famous sociological enquiries on the Church.
The consultors included:
Archbishop Justin Simonds of Melbourne, a longstanding champion of the YCW, who had first learnt of the movement while studying at Louvain during the late 1920s;
Bishop Helder Pessôa Câmara, auxiliary of Rio de Janeiro, who had been an early JOC chaplain in Brazil as well as responsible for Catholic Action in the nation;