The market test: access expanded, but the mechanism matters

The work-from-home study shows a strong relationship between expanded WFH and full-time employment for people with physical disabilities, but employment alone cannot tell us why the relationship exists. This chapter uses wages, labor-force transitions, and the practical conditions of a job to weigh two explanations: more disabled workers were able to supply labor, or employers demanded more of it, or both. The result is a conditional way to judge WFH as accessibility infrastructure without treating a group-level estimate as a universal workplace rule.

Wages reveal a likely direction of movement

There are two broad ways an expanded remote-work opportunity could raise employment. It could lower the cost of supplying labor for people with disabilities. Commuting may become easier to avoid, the home environment may be easier to control, or working hours may become more manageable. More people could then enter the labor force or remain in it. Alternatively, WFH could raise employer demand: a remote arrangement may reduce some costs of modifying a physical site, affect how disability is observed during hiring, or improve productivity when a worker can control the environment. Both forces could increase the number employed, but they make different predictions about wages.

If the main change is an outward expansion of labor supply, employment can rise while wages fall as employers hire from a larger pool. If the main change is an outward expansion of demand, employment and wages may rise together. This is not a perfect diagnostic—wages respond to many forces—but it gives the employment result an economic test rather than leaving it as a list of plausible stories.

The paper compares wage growth in occupations above and below the median WFH rate before and after the pandemic. For workers with a disability, wages in high-WFH occupations fell by 1.4%, while wages in low-WFH occupations rose by 2.5%. The resulting difference-in-differences is a statistically significant 3.9% relative decline for the high-WFH group. The direction is consistent with more disabled workers supplying labor in occupations where WFH expanded.

The comparison with workers without a disability is important. If high-WFH occupations simply had weaker wage growth for everyone, the disabled-worker result would not identify a disability-specific supply response. Among workers without a disability, wages rose 2.0% in high-WFH occupations and 1.7% in low-WFH occupations. Their difference-in-differences is a small positive 0.3%. Subtracting that general pattern from the disability comparison produces a statistically significant triple difference of −4.2%.

The triple difference does not prove that commuting costs caused the wage movement. It says that the relative wage change associated with high-WFH occupations was more negative for workers with a disability than for comparable workers without a disability. That pattern makes a larger increase in the supply of disabled workers the leading interpretation.