WELS Joint Missions supports mission opportunities that are the responsibility of Home Missions, World Missions, and Ministerial Education. Much of this work centers around diaspora (people group) ministries, where immigrants who have joined our fellowship in the United States and Canada are able to take the gospel back to friends and family in their country of origin. Joint Missions administers the work of the Pastoral Studies Institute (PSI) and assists in other cross-cultural outreach efforts and new programs like WELS Mission Journeys.

The Joint Mission Council (JMC) facilitates the mission work of WELS Joint Missions. The JMC is made up of called and lay member representatives from Home Missions, World Missions, and Ministerial Education (specifically Wisconsin Lutheran Seminary).