The Constitutional Exception
The Thirteenth Amendment to the United States Constitution, ratified in 1865, reads: "Neither slavery nor involuntary servitude, except as a punishment for crime whereof the party shall have been duly convicted, shall exist within the United States, or any place subject to their jurisdiction." The exception clause -- six words -- created the constitutional basis for the entire prison labor system that followed.
The exception was not incidental. It was deliberate. Within years of the Thirteenth Amendment's ratification, Southern states enacted Black Codes -- vagrancy laws, loitering ordinances, and other statutes designed to criminalize Black existence and funnel newly freed people into the criminal justice system. Once convicted, they could be leased to private employers under the convict leasing system -- a practice that the ACLU's 2022 report identifies as the direct antecedent of contemporary prison labor. Convict leasing was not abolished because it was recognized as a moral successor to slavery. It was abolished because it became economically less efficient than other forms of captive labor, including state-run chain gangs and prison farms.
The constitutional framework has not changed. The Thirteenth Amendment's exception clause remains in effect. Multiple state ballot measures in recent years have sought to remove slavery exception clauses from state constitutions -- voters in Alabama, Oregon, Tennessee, and Vermont have approved such measures since 2022. But the federal constitutional exception remains, and it provides the legal foundation for a labor system in which incarcerated people can be compelled to work, punished for refusal, and paid at rates that would constitute criminal wage theft in any other employment context.
The Thirteenth Amendment abolished slavery -- except for people convicted of crimes. The exception has been in continuous operation for 160 years. The labor market it created is worth billions annually.
The Scale of the Captive Workforce
The ACLU/University of Chicago "Captive Labor" report provides the most comprehensive data available on the scope of prison labor in the United States. The findings establish the scale: approximately 791,000 incarcerated people work in American prisons. This represents over 65% of the total prison population. The workforce produces at least $2 billion in goods and at least $9 billion in prison maintenance services annually -- though the report notes that these figures are likely underestimates because prison labor output is not systematically tracked.
The labor falls into several categories. The largest category is institutional maintenance: cooking, cleaning, laundry, groundskeeping, and facility repair that keeps the prisons themselves operating. Without this labor, prisons would need to hire free-world workers at market rates -- a cost that would substantially increase the per-capita cost of incarceration. The second category is state-owned industries -- manufacturing, agriculture, and services produced for government agencies. The third category is labor for private companies, either through direct contracts or through intermediaries like UNICOR (Federal Prison Industries).
UNICOR, the trade name of Federal Prison Industries, is a government-owned corporation that employs federal prisoners in manufacturing and service industries. UNICOR generates hundreds of millions of dollars in annual net sales. Its products include furniture, textiles, electronics, and services ranging from data entry to call center operations. Federal agencies are required to purchase from UNICOR when its products meet their needs, creating a captive market for goods produced by a captive workforce.
The Wage Structure
Prison wages are not set by market forces, collective bargaining, or minimum wage laws. They are set by corrections departments, and they bear no relationship to the value of the labor performed or the wages that free-world workers receive for comparable work. The ACLU report documented the wage structure across all 50 states, revealing a system in which compensation ranges from nothing to amounts that are functionally nothing.
| Category | Wage Range | States / Details |
|---|---|---|
| Zero pay (majority of work) | $0.00/hour | Alabama, Arkansas, Florida, Georgia, Mississippi, South Carolina, Texas |
| Non-industry prison jobs | $0.13-$0.52/hour avg. | Most remaining states; cooking, cleaning, laundry, maintenance |
| State prison industry jobs | $0.33-$1.41/hour avg. | Manufacturing, agriculture for state agencies |
| UNICOR (federal) | $0.23-$1.15/hour | Federal Prison Industries; furniture, textiles, electronics |
| Deductions from wages | Up to 80% | Taxes, "room and board," court costs, restitution |
Even the highest prison wages are a fraction of the federal minimum wage ($7.25/hour), which itself is widely regarded as insufficient. But the comparison to minimum wage understates the extraction: prison workers who do earn wages often see up to 80% of their pay withheld for taxes, "room and board" charges, court costs, restitution, and other deductions. A worker earning $0.52/hour who loses 80% to deductions takes home approximately $0.10/hour. At eight hours per day, that is $0.80 -- insufficient to purchase a bar of soap from the prison commissary.
The ACLU survey found that 70% of incarcerated workers reported being unable to afford basic necessities -- soap, toothpaste, phone calls to family members -- with prison labor wages. The wages are not compensation in any meaningful economic sense. They are a nominal payment whose primary function is to maintain the formal distinction between prison labor and the involuntary servitude that the Thirteenth Amendment permits but that contemporary sensibilities require to be disguised.
The Coercion Structure
Incarcerated workers cannot refuse to work. The ACLU report documented that in most states, refusal to work results in disciplinary action: loss of good-time credits (which directly extends the length of incarceration), solitary confinement, loss of commissary privileges, loss of visitation rights, and transfer to higher-security facilities. The choice facing an incarcerated person is not whether to work but whether to accept punishment for not working.
The coercion extends beyond formal penalties. In many facilities, access to basic goods and services -- adequate food, personal hygiene items, communication with family -- requires commissary purchases that require money that requires work. The prison wage is too low to meet these needs, but it is the only income source available. Family members on the outside can deposit money into commissary accounts, but this transfers the economic burden to families who are themselves disproportionately poor. The Economic Policy Institute has documented that families of incarcerated people spend an average of $13,000-$25,000 annually on costs related to their loved one's incarceration -- phone calls, commissary deposits, travel for visits.
The 2022 ACLU survey found that 64% of incarcerated workers reported worrying about their safety while working. Seventy percent said they received no formal job training. They are not covered by OSHA workplace safety regulations. They are not eligible for workers' compensation if injured on the job. They cannot file unemployment claims when released. Their labor generates billions in economic value while they accumulate no Social Security credits, no work history recognized by employers, and no savings sufficient to support reentry.
The Corporate Supply Chain
Prison labor enters the broader economy through multiple channels. The most direct is state and federal prison industry programs that manufacture goods for government agencies. UNICOR's mandatory-source requirement for federal agencies ensures a captive market. State prison industry programs produce goods ranging from license plates and road signs to furniture, clothing, and agricultural products -- sold to state agencies, public universities, and other government entities.
The private-sector connection is harder to trace but documented. Incarcerated workers have been employed in call centers, packaging operations, manufacturing, and agricultural work that produces goods and services sold in commercial markets. The supply chain is often obscured through subcontractors and intermediaries. A company may not directly contract with a prison, but its subcontractor does, or its subcontractor's subcontractor does. The opacity is structural: companies benefit from below-market labor costs without the reputational risk of visibly employing prisoners.
The structural parallel to the Labor Chain series (LC) in the broader Archive is precise. In both cases, a labor force works under conditions -- wages, safety, coercion -- that would be illegal in the broader labor market. In both cases, the products of that labor enter commercial supply chains through intermediaries that obscure the origin. In both cases, the system persists because the beneficiaries are sufficiently powerful and the workforce sufficiently powerless that the market-distorting effects of captive labor are treated as a feature rather than a defect.
The prison labor market is not a shadow economy. It is a constitutionally authorized labor market in which the workforce has no right to refuse, no right to negotiate, no workplace safety protections, and no minimum wage. It produces $11 billion annually in documented economic output.
The Reform Landscape
Efforts to reform prison labor have gained momentum in recent years, though they have achieved limited structural change. Since 2022, voters in Alabama, Oregon, Tennessee, and Vermont have approved state constitutional amendments removing language that permitted slavery or involuntary servitude as criminal punishment. These amendments are symbolically significant but practically limited: they do not automatically change prison labor practices, and implementation has been slow and contested.
At the federal level, the Abolition Amendment -- a proposed constitutional amendment to remove the Thirteenth Amendment's exception clause -- has been introduced in multiple congressional sessions but has not advanced to a vote. The political economy of prison labor reform mirrors the political economy of every system documented in the Archive: the beneficiaries of the current system (corrections departments that depend on free or near-free labor, companies that access below-market production costs, and governments that would face substantially higher incarceration costs without captive labor) have concentrated interests in its preservation, while the costs (borne by incarcerated workers and their families) are diffuse and politically powerless.
The most structurally significant reform efforts have focused not on abolishing prison labor but on extending standard labor protections to incarcerated workers: minimum wage coverage, workplace safety regulation, workers' compensation, and Social Security credit accumulation. These reforms would not end prison labor, but they would end its defining characteristic -- the constitutional exclusion of incarcerated workers from the protections that apply to everyone else.
The Captive Workforce -- Named
The structural condition in which 791,000 incarcerated people are compelled to work under conditions -- wages of $0.13-$0.52/hour or nothing, no right to refuse, no workplace safety protections, no minimum wage coverage, no unemployment insurance, no workers' compensation, no Social Security credit -- that are constitutionally authorized by the Thirteenth Amendment's exception clause and that would constitute criminal labor violations in any other employment context. The Captive Workforce produces at least $11 billion annually in goods and services. Its members cannot refuse work without punishment, cannot negotiate compensation, and cannot organize. Their labor subsidizes the operation of the prison system (through institutional maintenance that would otherwise require market-rate hiring), government agencies (through mandatory-source procurement), and private companies (through supply chain intermediaries that obscure the origin of below-market production). The Captive Workforce is the Carceral Economy's fourth mechanism: the conversion of incarcerated bodies into a constitutionally authorized labor force whose output subsidizes the system that confines them. Its structural parallel to historical convict leasing is documented by the ACLU's own report: the constitutional basis is the same six-word exception clause, the economic logic is the same (captive labor at below-market rates), and the racial composition of the workforce reflects the same structural disparities that characterize every stage of the Carceral Economy.