Navistar has four separate Main Labor Contracts (MLCs) currently under negotiation with the UAW, which cover four separate, multi-site bargaining units. These contracts, along with welfare and retirement benefit plans and other supplemental documents, comprise the multi-site collective bargaining agreements between the company and the UAW. The four different MLCs and the corresponding bargaining units are as follows:
- Production and Maintenance MLC – covers production and maintenance (P&M) employees at the Melrose Park (Illinois) Engine Plant and Springfield (Ohio) Truck Plant.
- Clerical and Technical MLC – covers certain clerical and technical (C&T) employees at the Melrose Park Engine Plant and Engineering operations and Springfield Truck Plant.
- Parts Distribution Center Warehouse MLC – covers warehouse employees at the Parts Distribution Centers (PDC) in Atlanta and Dallas.
- Parts Distribution Center Office MLC – covers office employees at the Parts Distribution Centers (PDCs) in Atlanta, York (Pennsylvania) and Dallas.