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December 15, 2019 

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INJECTION LINE: A line used in the injection-leakage model representing the relation between non-consumption expenditures (that is, injections) and national income. The three injections are investment expenditures, government purchases, and exports. The foundation of the injection line is the investment line, which is then enhanced by adding government purchases and exports. The other part of the injection-leakage model is a line representing leakages. The intersection of the injection and leakage lines identifies equilibrium aggregate output, or Keynesian equilibrium.

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AVERAGE FACTOR COST CURVE, MONOPSONY:

A curve that graphically represents the relation between average factor cost incurred by a firm for employing an input and the quantity of input used. Because average factor cost is essentially the price of the input, the average factor cost curve is also the supply curve for the input. The average factor cost curve for a firm with no market control is horizontal. The average factor cost curve for a firm with market control is positively sloped.
Monopsony is a market structure with a single buyer or in terms of factor markets, a single employer. This means that monopsony is a price maker, with control over the buying side of the market. Market control means monopsony faces a positively-sloped supply curve. To buy a larger quantity, it must pay a higher price.

The average factor cost curve reflects the degree of market control held by a firm. For a perfectly competitive firm with no market control, the average factor cost curve is a horizontal line. For firms with market control, especially monopsony, the average factor cost curve is positively sloped.

Average Factor Cost Curve,
Monopsony
Average Factor Cost Curve, Monopsony
The exhibit to the right displays the average factor cost curve for a hypothetical firm, OmniKing Island Resort. This firm is the only employer of labor on a small tropical island. As the only employer on the island, OmniKing is a monopsony with extensive market control, and it faces a positively-sloped supply curve. To employ more workers, OmniKing must pay a higher price.

The vertical axis measures total factor cost and the horizontal axis measures the quantity of input (workers). Although quantity on this particular graph stops at 10 workers, it could go higher.

This curve indicates that if OmniKing hires 1 worker (at $6 per worker), then it incurs $6 of average factor cost. Alternatively, if it hires 10 workers (at $15 per worker), then it pays $15 of average factor cost.

This positively-sloped average factor cost curve is actually nothing more than the supply curve facing OmniKing for hiring labor. In the analysis of factor markets, the average factor cost curve and the supply curve facing the firm are almost always one and the same.

Although this average factor cost curve is based on the employment activity of OmniKing Island Resort, a well-known monopsony firm, they apply to any buyer with market control. Monopsonistic competition and oligopsony firms that also face positively-sloped supply curves generate comparable average factor costs.

<= AVERAGE FACTOR COST CURVEAVERAGE FACTOR COST CURVE, PERFECT COMPETITION =>


Recommended Citation:

AVERAGE FACTOR COST CURVE, MONOPSONY, AmosWEB Encyclonomic WEB*pedia, http://www.AmosWEB.com, AmosWEB LLC, 2000-2019. [Accessed: December 15, 2019].


Check Out These Related Terms...

     | average factor cost curve | average factor cost curve, perfect competition | total factor cost | total factor cost curve | marginal factor cost | marginal factor cost curve | total cost | total product | average factor cost, perfect competition | average factor cost, monopsony |


Or For A Little Background...

     | market structures | perfect competition | perfect competition characteristics | perfect competition and demand | monopsony | oligopsony | monopsonistic competition | supply | supply price | law of supply | efficiency |


And For Further Study...

     | factor market analysis | short-run production analysis | marginal factor cost and average factor cost | factor supply | factor supply curve | supply by a firm | supply to a firm | mobility |


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