Sawyer Manufacturing Corporation uses a predetermined overhead rate based on direct labor hours to apply manufacturing overhead to jobs. Last year, the company worked 30,000 actual direct labor hours and incurred $348,000 in actual manufacturing overhead costs, while it had estimated 29,000 labor hours and $319,000 in overhead costs. Based on the actual versus estimated figures, the company's manufacturing overhead for the year was underapplied by $18,000.