What Is a Monopsony?

A monopsony is a market condition in which there is only one buyer. Like a monopoly, a monopsony also has imperfect market conditions. The difference between a monopoly and monopsony is primarily in the difference between the controlling entities. A single buyer dominates a monopsonized market while an individual seller controls a monopolized market.

Monopsony Explained

In a monopsony, a large buyer controls the market. There are several scenarios where a monopsony can occur. Like a monopoly, a monopsony also does not adhere to standard pricing from balancing supply-side and demand-side factors. In a monopoly, where there are few suppliers, the controlling entity can sell its product at a price of its choosing because buyers are willing to pay its designated price. In a monopsony, the controlling body is a buyer. This buyer may use its size advantage to obtain low prices because many sellers vie for its business.

Monopsonies take many different forms and may occur in all types of markets. Some economists have accused Ernest and Julio Gallo–a conglomerate of wineries and wine producers–of being a monopsony. The company is so large and has so much buying power over grape growers that grape wholesalers have no choice but to lower prices and agree to the company's terms.

Key Takeaways

  • A monopsony refers to a market with a single buyer.
  • In a monopsony, a single buyer generally has a controlling advantage that drives its consumption price levels down.
  • Monopsonies commonly experience low prices from wholesalers and an advantage in paid wages.


Monopsony and Employee Wages

Monopsony can also be common in labor markets when a single employer has an advantage over the workforce. When this happens, the wholesalers, in this case, the potential employees, agree to a lower wage because of factors resulting from the buying company’s control. This wage control drives down the cost to the employer and increases profit margins.

The technology engineering market offers one example of wage suppression. With only a few large tech companies in the market requiring engineers, major players such as Cisco, Oracle and others have been accused of conspiring on wages to minimize labor costs so that the major tech companies can generate higher profits. This example illustrates a sort of oligopsony in which multiple companies are involved.

Real World Example

Economists and policymakers have increasingly become concerned with the domination of just a handful of highly successful companies controlling an outsized market share in a given industry. They fear these industry giants will influence pricing power and exert their ability to suppress industry-wide wages. Indeed, according to the Economic Policy Institute, a nonpartisan and nonprofit think tank, the gap between productivity and wage growth has been increasing over the last 50 years with productivity outpacing wages by more than six times.

In 2018, economists Alan Krueger and Eric Posner authored A Proposal for Protecting Low‑Income Workers from Monopsony and Collusion for The Hamilton Project, which argued that labor market collusion or monopsonization might contribute to wage stagnation, rising inequality, and declining productivity in the American economy. They proposed a series of reforms to protect workers and strengthen the labor market. Those reforms include forcing the federal government to provide enhanced scrutiny of mergers for adverse labor market effects, the banning of non-compete covenants which bind low-wage workers and prohibiting no-poaching arrangements among establishments that belong to a single franchise company.