All the baptized need to understand that part of their duty regarding liturgy is to accept some responsibility for the liturgy, to place themselves and their God-given talents at the service of the liturgical community whenever possible. If liturgy is a duty as well as a right, then part of the duty for those able to undertake these tasks is the responsibility to assume such key roles as those of lector, server or acolyte, extraordinary minister of Holy Communion, usher, choir member, etc. Whether one brings up the gifts at the Presentation, reads the Word of God, assists with the distribution of Communion and brings the Eucharist to those unable to be present at Mass, serves at the altar, provides music that augments the joy, solemnity and festivity of the celebration or serves the assembled community as an usher, he or she is contributing to the worship of the community and fulfilling the responsibility that comes with Baptism.
United States Conference of Catholic Bishops
Committee on Divine Worship