Yes, inmates do make license plates, and they make most of them. Roughly 80% of the license plates issued in the United States are produced by incarcerated workers inside a small number of state prison factories. Between eight and ten prison manufacturing operations supply plates to somewhere around 37 to 40 jurisdictions, meaning a single facility often stamps plates for its own state plus several neighbors. Utah’s correctional industries operation even brands its inmate crew the “Plate Busters.”
A few states skip prison labor entirely and buy from private manufacturers or import from Canada, but they are the exception. The reason so few facilities handle such enormous volume is straightforward: once a prison has the industrial presses, reflective sheeting equipment, and either embossing dies or digital printers running, scaling up to serve additional states costs relatively little.
Why License Plates Come From Prisons
The legal architecture pushes plate work toward prisons. Under 18 U.S.C. ยง 1761, knowingly shipping prison-made goods in interstate commerce for private sale is a federal crime punishable by up to two years in prison. The statute carves out a large exception, though: goods produced for federal, state, or local government use are exempt. License plates fit that exception cleanly, because the buyer is always a government agency.
Most states layer their own “state-use” laws on top. Those laws require government agencies to buy prison-made goods when available and bar prison industries from selling to private consumers. The result is a protected market with no private-sector competition for government contracts. License plates, office furniture, uniforms, and cleaning supplies are common outputs.
Cost seals the arrangement. Inmate workers earn a fraction of free-world wages, which lets states produce plates for under two dollars apiece. That math has kept the system entrenched for decades.
How the Plates Are Actually Made
Traditional plate lines start with large coiled rolls of aluminum sheeting. Machines cut the aluminum into plate-sized blanks, punch bolt holes, and feed the blanks into a press that embosses raised letters and numbers. A roll coater applies paint to the raised characters, tiny reflective glass beads get pressed into the paint for nighttime visibility, and the finished plates cure in an industrial oven.
Many facilities have shifted to digital production, which skips embossing entirely. The newer method uses thermal transfer ribbons to print numbers and designs directly onto reflective vinyl sheeting, which is then laminated onto flat aluminum blanks. Digital lines run faster: 30 to 40 plates per minute compared with about 20 for embossing, and some inkjet-based systems reach 100 per minute. They also skip the paint and oven steps.
The tradeoff is unit cost. One state legislative analysis put digital plates at roughly $2.80 to $3.00 each versus $1.70 to $1.80 for embossed plates, though manufacturers argue the gap narrows once you factor in thinner aluminum, lower shipping weight, and reduced inventory. Either way, inspectors check every plate before packaging and shipping to the motor vehicle agency.
What Inmates Earn for the Work
Pay is low. In the federal system, Federal Prison Industries (UNICOR) sets wages across four pay grades, with hourly rates from $0.42 at the bottom to $1.05 at the top. Longevity bonuses add $0.10 to $0.30 per hour after 18 months to seven years of service, so even a veteran worker rarely clears $1.35 an hour. Regular institutional jobs outside UNICOR pay federal inmates as little as $0.12 per hour.
State correctional industries wages vary widely. Some states pay nothing at all. In most, hourly rates fall between $0.33 and $1.41, with a handful of states reaching $4.00 to $5.00 for their highest-paying positions.
One program pays more. The Prison Industry Enhancement Certification Program (PIECP), administered by the Bureau of Justice Assistance, allows certified prison industries to pay incarcerated workers the prevailing local wage for comparable work. The take-home is smaller than it sounds. Employers can withhold up to 80% of gross wages, split among federal and state taxes, room and board, family support, and a mandatory 5% to 20% contribution to victim compensation funds.1Bureau of Justice Assistance. PIECP Compliance Guide A worker earning $15 an hour under PIECP might take home $3. As of late 2022, PIECP programs had generated nearly $109 million for victims’ programs, $54.9 million for family support, and $343.8 million toward incarceration costs.2Bureau of Justice Assistance. Prison Industry Enhancement Certification Program (PIECP) Overview
The Legal Basis for Compelling the Work
The constitutional foundation is the Thirteenth Amendment itself. The amendment abolished slavery but included an explicit exception: “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.”3U.S. Congress. U.S. Constitution – Thirteenth Amendment That clause has been the legal basis for compulsory prison work programs since 1865.
Federal policy takes the exception at face value. The Bureau of Prisons operates on the principle that all sentenced inmates must work unless excused for security reasons, discipline, medical disability, or participation in education and rehabilitation programs.4Office of the Law Revision Counsel. 18 USC 4121 Roughly 55% of the American prison population, more than 800,000 people, are compelled by law or institutional policy to work during their incarceration. At the federal level those assignments flow through UNICOR, the government corporation that runs factories inside federal prisons producing furniture, electronics, and license plates.
Since 2018, eight states have amended their constitutions to remove language permitting slavery or involuntary servitude as criminal punishment: Colorado in 2018; Nebraska and Utah in 2020; and Alabama, Oregon, Tennessee, and Vermont in 2022. Rhode Island has prohibited all forms of slavery in its constitution since 1843. The practical effect on prison manufacturing has been limited. Utah’s amendment explicitly states that its ban “does not apply to the otherwise lawful administration of the criminal justice system,” and Colorado’s broader language has generated ongoing litigation without shutting down prison factories.
Does the Work Help Anyone After Release
Correctional administrators argue that manufacturing jobs teach marketable skills and reduce reoffending. The evidence supports that argument, but duration matters. A RAND Corporation meta-analysis found that inmates who participated in correctional education and vocational programs had 43% lower odds of reoffending than those who did not.
A state-level study tracking released inmates over three years showed how program length changes the picture. Inmates who spent less than six months in correctional industries programs actually reoffended at a slightly higher rate (31%) than those who never participated (28%). Inmates who stayed six months or more saw recidivism drop to around 15%, and those who participated for a year or longer reoffended at just 11%. Short stints accomplish little. The benefit shows up only after sustained engagement, which means frequent transfers, short sentences, and institutional disruptions undercut the very mechanism that makes the programs work.
Skills earned inside also collide with barriers outside. An estimated 32,000 state laws restrict occupational and business licensing for people with criminal records, and more than a third of those laws include automatic disqualifications regardless of whether the conviction relates to the job. A growing number of states now prohibit licensing boards from denying a license based solely on a criminal record unless the conviction directly relates to the occupation, and factors like time elapsed and evidence of rehabilitation increasingly get consideration. The gap between what someone learns on the plate line and what the job market lets them do with it remains the sharpest criticism of the whole system.