-Come to me, all you that labor and are heavy laden, and I will give you rest.-Mathew 11:28 (AKJV)

In the early 1990s, a grassroots coalition of churches in Baltimore, Maryland helped launch what would become a national movement. Joining forces with labor and low-wage worker organizations, they passed the first municipal living wage ordinance. Since then, over 144 municipalities and counties as well as numerous universities and local businesses in the United States have enacted such ordinances.

Although religious persons and organizations have been important both in the origins...