Three Rivers Planning & Development District, Inc. serves as the fiscal/administrative agent for The Mississippi Partnership, one of four workforce investment areas in the state of Mississippi designated to carry out the Workforce Investment Act of 1998 (WIA). The Mississippi Partnership workforce area is the largest geographical area in the state, covering 27 counties in north and northeast Mississippi and is governed by a 62 member board and 27 Chief Elected Officials.

The Mississippi Partnership is responsible for establishing and maintaining a workforce system that provides the highest quality services while providing a skilled workforce. MPWIB is also responsible for establishing local performance standards, one-stop delivery centers known as WIN Job Centers in the State of Mississippi, selecting qualified service providers for youth services, and monitoring performance.

Services are delivered through partnerships with community colleges, planning and development districts, faith and community based organizations, Mississippi Department of Employment Security, Mississippi Department of Rehabilitation Services, and other partners within the 27 counties.