> Textbooks state that, in the absence of a minimum wage, a worker is paid his “marginal product of labour”, which means the value of what he produces. > Just as a monopolist can set prices higher than would be the case in a competitive market, a monopsonist can set prices artificially lower. A lot of economic arguments forget these ideas. The labor market is not a free market: companies have more power in negotiatio…
This sentence is just wrong. First of all a rational actor will not intentionally pay a worker the value of their production; you get no profit.
Textbooks actually say that a worker will be paid no more than the marginal product of labor, and if labor is in short supply, they will be paid very close to their marginal product of labor. If there are a huge number of workers willing to work for $5/hr then workers won't tend to make even a penny more than this.
Information asymmetry and differences in negotiating power will further distort this, but the initial premise is already a strawman of basic microeconomics.