Question

Portsmouth Company makes upholstered furniture. Its only variable cost is direct materials. The demand for the company's products far exceeds its manufacturing capacity. The bottleneck (or constraint) in the production process is upholstery labor-hours. Information concerning three of Portsmouth's upholstered chairs appears below:

	Recliner	Sofa	Love Seat
Selling Price per Unit	1,078	1,880	1,500
Variable Cost per Unit	700	1,100	1,100
Upholstery Labor-Hours per Unit	7 hours	13 hours	5 hours

1. Portsmouth is considering paying its upholstery laborers hourly compensation, in addition to their usual salaries, to work overtime. Assuming that this extra time would be used to produce sofas, up to how much of an overtime premium per hour should the company be willing to pay to keep the upholstery shop open after normal working hours?

2. A small nearby upholstering company has offered to upholster furniture for Portsmouth at a price of $57 per hour. The management of Portsmouth is confident that this upholstering company’s work is high quality and their craftsmen can work as quickly as Portsmouth’s own craftsmen on the simpler upholstering jobs such as the Love Seat. How much additional contribution margin per hour can Portsmouth earn if if it hires the nearby upholstering company to make Love Seats?

Answer 1

Answer
1
	Sofas
Selling price per unit	$             1,880
Less: Variable cost per unit	$             1,100
Contribution margin per unit	$                780
Upholstery shop time required to produce one unit	13
Contribution margin per unit of the constrained resource	60
Maximum overtime premium per hour = $60
2
	Love seat
Selling price per unit	$             1,500
Less: Variable cost per unit	$             1,100
Contribution margin per unit	$                400
Upholstery shop time required to produce one unit	5
Contribution margin per unit of the constrained resource	80
Less: Additional cost per hour	57
Additional Contribution margin per hour	23
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