This paper proposes a costing framework with the objective of providing reliable, relevant, and timely information about the actual costs and the cost efficiency of planned maintenance jobs. The proposed framework includes direct materials, direct labor, and support services costs. The traceability criterion is used for assigning direct materials and direct labor costs to planned maintenance jobs. However, support services costs are allocated to planned maintenance jobs using the concepts and techniques of activity-based-costing (ABC). The proposed framework provides a complete audit trail of planned maintenance costs. It also provides a functionality that could be added to enterprise resource planning (ERP) systems.
