A moderate minimum wage can raise monopsony employment

The policy can move the firm toward the competitive outcome.

If a minimum wage is set above the monopsony wage but not too high, the firm can hire additional workers at a constant legal wage before MRC jumps. Employment can rise. In a competitive market, the basic binding-floor model predicts lower labor demanded and surplus labor. The market-structure assumption therefore decides the result.

Discrimination can also produce wage differences not explained by productivity. In a competitive model, employer discrimination raises cost for discriminating firms. Customer or employee preferences and institutional barriers can nevertheless sustain unequal outcomes. The economics exam generally asks for the mechanism specified in the stem rather than a single explanation for every observed gap.

Use two steps for monopsony

Use MRP and MRC to choose employment. Then move down to labor supply to find wage. Paying the MRC intersection is the monopsony equivalent of charging monopoly marginal revenue as price.

In a competitive labor market, a binding minimum wage above equilibrium creates excess labor supplied and reduces employment demanded. In monopsony, the starting employment is already below the competitive quantity because MRC lies above labor supply. A legal wage above the monopsony wage can flatten the employer’s marginal hiring cost over a range and move employment toward competition.

The result is not “any higher minimum wage raises jobs.” If the floor is set too high, the firm’s horizontal legal-wage cost intersects MRP at a low employment level, and employment falls. The effect depends on where the minimum sits relative to the monopsony wage and competitive wage.

Moving toward the competitive quantity

A monopsonist hires 30 workers at $14, while the competitive intersection is 45 workers at $18. A minimum wage of $17 may let the firm hire additional workers at a constant wage until MRP reaches $17, raising employment. A $30 minimum would intersect MRP much farther left and reduce it.

The policy can reduce monopsony deadweight loss while redistributing surplus toward workers, but it may also affect prices, entry, hours, benefits, or worker composition. The simplified graph focuses on wage and employment. Add other margins only if the question states them.

Discrimination is separate from monopsony, though both can create wage gaps. Discrimination means workers with comparable productivity receive different treatment because of group status or preferences. Monopsony means employers face upward-sloping labor supply and possess buyer power. A stem may contain either or both.

Human-capital differences, compensating differentials, and discrimination are alternative mechanisms. A wage gap alone does not identify which operates. Look for productivity evidence, job conditions, employer concentration, or unequal treatment in the scenario.

For economics exam problems, begin by naming the labor-market structure. Draw competitive supply-demand only for wage-taking markets. Draw labor supply with MRC above it for monopsony. Then place the legal wage and recompute rather than repeating the memorized competitive floor result.