Child labor laws in Mexico set the minimum working age at 15, cap the workday at six hours for anyone under 18, ban hazardous jobs until 18, and require a formal permit before a minor can join a payroll. Employers who hire children under 15 face fines that can exceed half a million pesos per violation and prison terms of one to four years, with heavier penalties when the work is hazardous or when the conduct crosses into trafficking. The framework is strong on paper; enforcement is thin, especially outside the formal economy.
Where the Rules Come From
The foundation is Article 123 of the Political Constitution of the United Mexican States, which governs labor and social security and has been amended repeatedly to strengthen protections for minors. The Federal Labor Law (Ley Federal del Trabajo) translates those constitutional principles into detailed rules on hours, prohibited tasks, documentation, and penalties. Mexico ratified ILO Convention 138 in 2015, fixing 15 as its national minimum age, and ratified ILO Convention 182 on the Worst Forms of Child Labour in 2000.1International Labour Organization. Ratifications of ILO Conventions: Ratifications for Mexico Other statutes layer on top, including the Law on the Rights of Children and Adolescents and the General Law on Human Trafficking, so a single violation can trigger administrative fines, criminal charges, or both.
Minimum Age and Hour Limits
No one under 15 may be legally employed. Workers who are 15 or 16 need written authorization from a parent or legal guardian before starting a job. For every worker aged 15 to 17, the law caps the workday at six hours, split into two three-hour blocks with a rest break of at least one hour between them. Work after 10:00 PM is off-limits. Overtime is not allowed. Neither are Sunday shifts or work on mandatory holidays for anyone under 18.
The logic is that adolescent workers are students first. Short, divided shifts leave room for school and rest, and an employer trying to stretch a teenager’s hours risks triggering the tougher penalties that apply to exploitative conditions.
Hazardous Work Banned Until 18
The Federal Labor Law identifies a long list of tasks classified as hazardous and completely off-limits to anyone under 18. The U.S. Department of Labor’s findings confirm that Mexican law treats the following as hazardous for minors:2U.S. Department of Labor. 2023 Findings on the Worst Forms of Child Labor: Mexico
- Mining, including underground operations and any extraction work with collapse, gas, or heavy-equipment risk.
- Construction jobs involving scaffolding, demolition, or structural work at height.
- Agricultural work involving pesticide application, chemical agents, or operation of heavy machinery such as industrial tractors.
- Any service role in bars, cantinas, or other venues whose primary business is selling alcohol.
- Street work, including vending, performing, and begging in public spaces.
- Auto repair involving industrial equipment and chemical solvents.
The hazardous designation also covers any environment where minors face exposure to toxic substances, extreme temperatures, excessive noise, or radiation, and it extends to workplaces considered harmful to a minor’s moral development. There is no exception for hazardous work below 18.
School Completion Is a Hiring Condition
Any minor seeking to work must have completed basic compulsory education, meaning secundaria (roughly middle school through ninth grade). Employers are legally required to verify this before hiring. When a minor has not yet finished school, the employer must schedule the work so it does not interfere with classes or assignments. This is not a preference. It is a condition of the work permit, and it is the piece of the system that most visibly fails in agriculture and informal street work, where scheduling flexibility does not exist and children routinely miss school during harvest seasons.
Permit and Paperwork Employers Must Have
Legally employing a minor requires a documented paper trail. The steps involve:
- A medical certificate from a public health authority such as the Mexican Social Security Institute (IMSS) confirming the minor is physically fit for the specific job.
- A formal work permit (Permiso para trabajar) issued by the local office of the Secretariat of Labor and Social Welfare (STPS).
- A certified copy of the birth certificate from the local Civil Registry.
- Written parental or guardian consent, submitted in person at the STPS office.
- Employer information including the tax identification number (RFC), a description of the tasks, and the exact working hours.
The STPS cross-checks the employer’s tax records and reviews the job description to confirm the tasks are non-hazardous before issuing the permit. Only after that authorization is granted can the minor legally join the payroll. Formal-sector employers such as retail chains and manufacturers generally follow this process. It is almost entirely absent from the informal economy, where most child labor happens.
Fines and Prison for Employers
Article 995 bis of the Federal Labor Law targets anyone who employs a child under 15. Financial penalties run from 2,500 to 5,000 times the daily Unit of Measure and Update (Unidad de Medida y Actualización, or UMA). As of February 2026, the daily UMA is 117.31 pesos, putting the fine range at roughly 293,000 to 587,000 pesos per violation.3Consulate General of Mexico in the United Kingdom. Equivalency Chart According to the Unit of Measurement and Update (UMA) On top of that, criminal prosecution can bring one to four years of imprisonment. Penalties escalate when the minor was engaged in hazardous work.
Both the fines and prison terms reach any manager, owner, or company representative who knowingly participated in the illegal hiring. The dual structure of corporate fines and personal criminal liability is designed to keep business owners from hiding behind their companies.
Forced Child Labor as Trafficking
The most severe abuses fall under the General Law to Prevent, Punish, and Eradicate Crimes Related to Human Trafficking, which treats forced child labor and commercial sexual exploitation of children as trafficking offenses. Sex trafficking convictions carry 5 to 30 years in prison; labor trafficking convictions bring 5 to 20 years.4U.S. Embassy Mexico. 2025 Trafficking in Persons Report: Mexico
A 2024 amendment expanded the definition of labor exploitation to include excess work shifts beyond legal limits, wages below the legal minimum, and dangerous conditions without proper protections. Penalties for labor exploitation under the trafficking law start at three to ten years in prison, with fines tied to the offender’s daily income. When victims are from indigenous or Afro-Mexican communities, penalties rise to four to twelve years. These crimes are prosecuted without requiring a complaint from the victim; any person or authority with knowledge of the abuse can trigger an investigation.
Why Enforcement Falls Short
Mexico has about 660 federal labor inspectors for a workforce of roughly 60.5 million people. The U.S. Department of Labor estimates adequate coverage would require about 4,035 inspectors, leaving Mexico with less than one-sixth of what it needs, and those inspectors are concentrated in urban and industrial settings.5U.S. Department of Labor. Child Labor in Mexico: Findings on the Worst Forms of Child Labor Coordination between federal and state inspectorates is weak, and the federal government has repeatedly failed to provide complete data on investigations, prosecutions, and convictions related to child labor.
The informal sector, where most child labor takes place, is largely invisible to the inspection system. A family that hires a 12-year-old to pick chile peppers has no RFC on file, does not apply for a work permit, and is unlikely to encounter an inspector. Routine inspections in agriculture and the informal economy remain rare. The penalties exist; the machinery to impose them is understaffed and underfunded.
USMCA Pressure From Trading Partners
Chapter 23 of the United States-Mexico-Canada Agreement requires each country to adopt and maintain laws providing for the effective abolition of child labor and a prohibition on its worst forms.6Office of the U.S. Trade Representative. USMCA Chapter 23: Labor Article 23.6 requires each country to prohibit the importation of goods produced by forced or compulsory labor, including forced child labor. The agreement’s Rapid Response Labor Mechanism, in Annex 31-A, allows the United States or Canada to bring enforcement actions against specific Mexican facilities that violate labor rights.7U.S. Department of Labor. U.S.-Mexico-Canada Agreement Labor Rights: Report Violations and Track Labor Protections It has been used mostly in cases involving freedom of association and collective bargaining, but its framework could apply to facilities found using child labor, giving trading partners a lever that domestic enforcement currently lacks.