CATECHISM OF THE CATHOLIC CHURCH
SECOND EDITION

Paragraphs 910–913

910 "The laity can also feel called, or be in fact called, to cooperate with their pastors in the service of the ecclesial community, for the sake of its growth and life. This can be done through the exercise of different kinds of ministries according to the grace and charisms which the Lord has been pleased to bestow on them."
911 In the Church, "lay members of the Christian faithful can cooperate in the exercise of this power [of governance] in accord with the norm of law." And so the Church provides for their presence at particular councils, diocesan synods, pastoral councils; the exercise of the pastoral care of a parish, collaboration in finance committees, and participation in ecclesiastical tribunals, etc.
912 The faithful should "distinguish carefully between the rights and the duties which they have as belonging to the Church and those which fall to them as members of the human society. They will strive to unite the two harmoniously, remembering that in every temporal affair they are to be guided by a Christian conscience, since no human activity, even of the temporal order, can be withdrawn from God's dominion."
913 "Thus, every person, through these gifts given to him, is at once the witness and the living instrument of the mission of the Church itself 'according to the measure of Christ's bestowal."'