Some lay Catholics carry out full-time professional and vocational service in the name of the church, rather than in a secular calling. Though the phenomenon is widespread in North America and much of Europe, the organization and definition of the ministry is left to national bishops conferences. The United States Conference of Catholic Bishops has adopted the term lay ecclesial ministry for these individuals, as intentionally distinct from the general apostolate or ministry of the laity described above.Co-Workers in the Vineyard (pdf), United States Conference of Catholic Bishops, 2005
