The Church makes a moral judgment about economic and social matters, "when the fundamental rights of the person or the salvation of souls requires it." In the moral order she bears a mission distinct from that of political authorities: the Church is concerned with the temporal aspects of the common good because they are ordered to the sovereign Good, our ultimate end. She strives to inspire right attitudes with respect to earthly goods and in socio-economic relationships.
Source: Catechism of the Catholic Church (Vatican.va)