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Home » Sales management articles » Marginal Product: Definition and Examples of Marginal Product Explained

Marginal Product: Definition and Examples of Marginal Product Explained

October 18, 2019 By Hitesh Bhasin Tagged With: Sales management articles

The marginal product, according to economics, is defined as the change in the output, which is a result of increasing one more unit of relevant input. While measuring the marginal product is assume that the other quantities and other inputs are kept constant.

Table of Contents

  • Meaning and Explanation of Marginal Product
  • Examples
  • Law of Diminishing Marginal Product

Meaning and Explanation of Marginal Product

Mathematically, the marginal product can be defined as the ratio of change in the quantity of output, which is resulted from changing the input to change in the input, which is 1 unit in every case.

Marginal Product

It can be expressed as:

Marginal Product = Change in Output / Change in Input.

According to the law of diminishing marginal returns, there is an increase initially in the marginal product when more of input is used while keeping other inputs constant.

Thus if more and more units of inputs are added, it stops affecting the marginal product, and after a certain point it starts to become negative which states that adding additional units of labor has not increased but rather affected the output negatively by decreasing it.

The reason behind this can be attributed to reducing the marginal productivity of labor.

Marginal product measures the additional units which will be produced going to the addition of 1 unit input, which includes labor overhead or materials.

In such cases, given the marginal cost which is incurred can be measured and it can give the cost of producing an additional unit because of using one extra input unit.

The definition clearly states that marginal product is nothing but a measurement of the relationship between output and input. This calculation is done by the formula given above, and it is plotted With the amount of production on one axis and the type of input that is used on the other axis.

The critical path in this calculation is to keep all the inputs constant and only change one input to measure its impact as it is essential that marginal product is measured in the units which are tangible and input function is not present in it.

Examples

Examples

Consider an example of the car manufacturing facility which produces a certain number of cars per month. When there are no workers in the factory theoretically and logically in the factory will not produce any cars for any period tell their workers present.

Consider that there is only one employee in the factory who produces five cars in one year. Therefore the total productivity of the manufacturing facility of the car is five cars per year. When there is an addition of one more employee consider that both can produce eight cars in one year.

Therefore one additional unit of labor has produced three extra units of cars per year. The marginal product keeps on increasing as the number of input units is increased but after a certain. The marginal product will no longer increase even after the addition of input units.

The situation is termed as diminishing marginal returns.

Law of Diminishing Marginal Product

Law of Diminishing Marginal Product

The law states that in a business process if the input is increased, the output goes on increasing until a certain point. After a certain point, the output remains the same even if the input is increased and beyond a certain limit, the output starts to grow negative.

In laymen terms, changing only one factor of input will increase the productivity up to a certain point but only up to a limit, post which it affects negatively. Thus there are three phases in the law of diminishing marginal product. In the first phase, there is an increase in the output; in the second phase, the output remains the same, while in the case of the third phase, there is a reduction in output.

In the entire case, only the one factor of input is variable. While that one factor is steadily and constantly increasing, all other input factors are constant. That one input which is increased is also called as a variable input.

This law is applied to the industries which seek higher production rate and go on increasing input to extract output. This holds till a certain point, but after that, it affects negatively to the organization.

Taking the example of a car factory mentioned above, consider that car manufacturing requires six different machines. The car goes through the flow and finally emerges as one single unit. Two employees can generate eight cars a year. Now the company decides to increase the production and hires six more employees making total employees 8 and expecting the car production to increase eight times.

Theoretically, 40 cars should be manufactured in one year, but instead, seven cars are manufactured. The reason for this is that even if the employees are increased, the number of machines manufacturing cars are the same. Thus to increase productivity, the company should not only hire more employees but also increase the machinery in the manufacturing facility.

Another example can be taken to understand the law of diminishing marginal product, which can be presented in tabular form.

Year
EmployeesOutput
201250
500
201355540
201458620
201560600
201670580
201778520

Thus in the above table, it is clear that as the number of employees are increased, keeping all of the other input factors constant. The productivity is increased till a certain limit, but beyond that limit, the productivity remains constant and then starts to decline.

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About Hitesh Bhasin

I love writing about the latest in marketing & advertising. I am a serial entrepreneur & I created Marketing91 because I wanted my readers to stay ahead in this hectic business world.

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