Factory Overhead Costs. In both job order and process costing, the actual cost of factory overhead is accumulated in a general ledger control account, and the details of factory overhead costs accumulated in subsidiary records. In the subsidiary records, each overhead cost item, such as indirect materials or indirect labor, is broken down into amounts for each department. This detailed information is used as a basis for planning future costs and for controlling current costs. As overhead costs are incurred, they are recorded in a factory overhead general ledger account and are posted to the departmental subsidiary records for overhead. The following entry illustrates how actual factory overhead incurred during January would be recorded in the general ledger of American Chair Company.