Current Attempt in Progress In October. Cullumber Company reports 18,500 actual direct labor hours, and it incurs $164,000 of manufacturing overhead costs, Standard hours allowed for the work done is 20,500 hours. The predetermined overhead rate is $8.25 per direct labor hour. In addition, the flexible manufacturing overhead budget shows that budgeted costs are $6.05 variable per direct labor hour and $55,000 fixed. Compute the overhead volume variance. Normal capacity was 25,000 direct labor hours. Overhead Volume Variance