Chapter 10, Problem 10.4.3C

Factory overhead rate
Fabricator Inc., a specialized equipment manufacturer, uses a job order cost system. The overhead is allocated to jobs on the basis of direct labor hours. The overhead rate is now $3,000 per direct labor hour. The design engineer thinks that this is illogical. The design engineer has stated the following:
Our accounting system doesn't make any sense to me. It tells me that every labor hour carries an additional burden of $3,000. This means that while direct labor makes up only 5% of our total product cost, it drives all our costs. In addition, these rates give my design engineers incentives to "design out" direct labor by using machine technology. Yet, over the past years as we have had less and less direct labor, the overhead rate keeps going up and up. I won't be surprised if next year the rate is $4,000 per direct labor hour. I'm also concerned because small errors in our estimates of the direct labor content can have a large impact on our estimated costs. Just a 30~minute error in our estimate of assembly time is worth $ 1,500. Small mistakes in our direct labor time estimates really swing our bids around. I think this puts us at a disadvantage when we are going after business.

What do you think is a possible solution?