Chapter 19 Job Order Costing 21
Finally, ask the accountant how he or she could determine the costs spent on all jobs that are still being
LECTURE AID — Allocation of Overhead
In addition to direct materials cost and direct labor cost, objective 2 covers the allocation of overhead
costs in a job order setting. The following example may be helpful in explaining why overhead costs need
to be allocated.
Assume that you are responsible for planning a banquet for your school’s accounting club. The banquet
will feature a dinner, followed by a speaker. The costs associated with the banquet are as follows:
Meals $10 per person
Beverages (coffee and tea) $1 per person
Use of banquet room $50
Speaker’s fee $100
Assume that 50 students will attend the banquet. If you want to break even on this event, how much do
In this case, meals and beverages are costs that can be traced to each student attending the banquet. Fees
paid for use of the room and to the speaker cannot be directly traced to each student. These costs must be
allocated to each attendee in order to determine what it will cost each person to attend the banquet. The
$150 in costs allocated over 50 people equals $3 per person.
DEMONSTRATION PROBLEM — Allocation of Overhead
The costs of manufacturing a product that cannot be traced to a particular job are called overhead.
Overhead costs must be allocated to the products made to determine what each product costs.
Point out that, unlike the situation in the banquet example, overhead costs usually are not divided evenly
over the number of units produced. Assume that a television manufacturer spent $500,000 on overhead
costs to make 50,000 televisions. At first glance, it might seem fair to allocate $10 in overhead to each
television. But what if some televisions were big-screen stereo sets and some were small, portable
models? It isn’t fair to charge each set with the same overhead if some models are more complicated to
manufacture than others.
Assume that MTM manufacturing estimates it will spend $1 million on overhead expenses. MTM is a
highly automated manufacturing plant; therefore, the majority of its overhead expenses relate to
machinery (depreciation, repairs and maintenance, electricity used). Machine hours used would be a
reasonable way to allocate overhead costs to products because use of machinery causes (or drives)
overhead expenses. MTM estimates that it will run its machines for 40,000 hours during the year.
The formula to calculate MTM’s predetermined overhead rate is as follows: