: inflammation of several muscles at once; specifically : an inflammatory muscle disease of unknown cause that affects muscles and chiefly skeletal muscles and is characterized especially by weakness of the muscles (such as those of the shoulder, neck, or hip) closest to the trunk â see dermatomyositis.
Indirect labor costs are not readily identifiable with a specific task or work order. They are termed indirect costs and are charged to overhead accounts. Use indirect labor in a sentence. At our plant most of our employees are direct labor and a smaller portion are indirect labor that are not directly involved in the production process.
Tip. 1  You may also calculate the overhead rate based on direct labor hours. 2  Divide the overhead costs by the direct labor hours over the same measurement period. 3  In the example, the overhead rate is $20 for each direct labor hour ($2,000/100). Divide the overhead costs by the direct labor hours over the same measurement period. 2  In the example, the overhead rate is $20 for each direct labor hour ($2,000/100).