The Biden administration has moved to end a program that has for decades allowed companies to pay workers with disabilities less than the minimum wage.

The statute, enacted as part of the Fair Labor Standards Act of 1938, has let employers obtain certificates from the Labor Department that authorize them to pay workers with disabilities less than the federal minimum wage, currently $7.25 an hour. The agency began a “comprehensive review” of the program last year, and on Dec. 3 it proposed a rule that would bar new certificates and phase out current ones over three years.

“This proposal would help ensure that workers with disabilities have access to equal employment opportunities, while reinforcing our fundamental belief that all workers deserve fair compensation for their contribution,” Taryn Williams, assistant secretary of labor for disability employment policy, told reporters.

As of May, about 800 employers held certificates allowing them to pay workers less than minimum wage, affecting about 40,000 people, said Kristin Garcia, deputy administrator of the Labor Department’s wage and hour division.

Those figures reflect a steep decline in employers’ reliance on the program in recent years: The number of workers with disabilities earning less than the minimum wage dropped to 122,000 in 2019 from 296,000 in 2010, according to a report published last year from the Government Accountability Office.

Since 2019, more than half of workers employed under this program earned less than $3.50 an hour, the report says.

The proposed rule, even if it is made final, faces several hurdles. It is likely to confront legal challenges and could be reversed under the incoming Trump administration. There has been debate about whether the department has the authority to alter the program or if that power rests solely with Congress.

“Companies and corporations will fight back against it,” said Doron Dorfman, a professor of disability and employment law at Seton Hall Law School. “It’s going to be a hard battle, so you really need an administration that cares about the topic, who is really committed to the topic, to make a change. I doubt that for the new administration, it’s going to be at the top of their priorities.”

Many disability rights advocates have pushed for years to end the practice, arguing that it perpetuates economic inequality and prevents those with disabilities from affording basic goods without government assistance or other forms of financial support. Several states have banned or restricted the practice.

Certificates allowing employers to pay less than the minimum wage are “inherently based on a deeply flawed, false, ableist notion that disabled workers’ labor and contributions are less valuable than the labor and contributions of their nondisabled peers,” said Maria Town, president of the American Association of People With Disabilities. “The ideas on which these certificates are based have no place in our modern society and workforce.”

Some parents of adults with disabilities, however, have urged for the program to remain in place, raising concern about a potential loss of work opportunities or Social Security benefits.

The Coalition for the Preservation of Employment Choice, a group of families, caregivers and others pushing for the program to stay in effect, did not respond to a request for comment on the proposal. But the group has argued that eliminating the statute would reduce the number and diversity of employment opportunities for people with disabilities.

Opportunities for workers with disabilities to obtain employment at the full minimum wage have “dramatically expanded” in recent decades, Garcia said. These changes factored into Labor’s conclusion that issuing certificates for pay below the minimum wage was no longer necessary, she said, and the proposed rule would increase workers’ purchasing power and independence.