Working-time regulations in Mexico have remained largely unchanged for more than a century. Since the enactment of the 1917 Constitution, Article 123 established a maximum workday of eight hours and a six-day workweek with one day of rest, giving rise to the standard 48-hour workweek. This structure, later consolidated in Article 69 of Mexico’s Federal Labor Law (LFT), shaped an organizational culture focused more on employees’ physical presence than on productivity per hour worked.
The transformation process formally began in 2022, when Congresswoman Susana Prieto Terrazas introduced a proposal to reduce the workweek from 48 to 40 hours by establishing two mandatory days of rest for every five days worked, with full pay. Following a tripartite social dialogue process involving the government, employers, and labor unions from June 2 to July 7, 2025, the resulting consensus paved the way for the publication of the constitutional reform decree in Mexico’s Official Gazette (DOF) on March 3, 2026, followed by amendments to the Federal Labor Law on May 1, 2026.
The gradual implementation schedule establishes that the reduction will formally begin on January 1, 2027 and conclude on January 1, 2030, reducing the maximum weekly working hours by two hours at the beginning of each year:
|
Transition year |
Maximum Regular Weekly Hours |
Maximum Overtime Hours Allowed |
|
2026 |
48 hours |
9 hours |
|
2027 |
46 hours |
9 hours |
|
2028 |
44 hours |
10 hours |
|
2029 |
42 hours |
11 hours |
|
2030 |
40 hours |
12 hours |
Overtime will be paid at 100% above the regular hourly wage (double pay), provided it does not exceed 12 hours per week, is not distributed over more than 4 hours per day, and does not occur on more than 4 days per week. If the 12-hour weekly limit is exceeded, the employer must pay the additional overtime at 200% above the regular hourly wage (triple pay).
In addition, starting on January 1, 2027, employers will be required to keep an electronic record of each employee’s daily start and end times. This requirement will apply across all workplaces in Mexico. Companies that fail to comply may face significant fines calculated in Units of Measurement and Update (UMAs):
|
Type of regulatory violation |
Penalty in UMAs (2026 UMA value MXN $117.31) |
Equivalent Cost (Mexican Pesos) |
|
Failure to maintain electronic time records |
250 to 5,000 UMAs for each affected employee |
MXN $29,327.50 to $586,550.00 per employee |
|
Establishment of working hours exceeding the legal limit |
50 a 5,000 UMAs depending on severity |
MXN $5,865.50 to $586,550.00 per violation |
|
Unpaid or incorrectly calculated overtime |
250 to 5,000 UMAs depending on severity |
MXN $29,327.50 to $586,550.00 per violation |
The Public and Social Perspective: Health, Well-Being, and Retention
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Reducing Fatigue, Burnout and Absenteeism
Evidence around working-time reduction suggests that shorter working hours can support greater rest and employee well-being while helping reduce fatigue and workplace safety risks. Excessive working hours and overtime can also contribute to absenteeism, turnover, and lower productivity, making working-time management an increasingly important workforce consideration for employers.
Historical OECD data also highlights the scale of the issue. Mexico’s workforce averages between 2,128 and 2,207 hours worked per year, compared with an average of 1,687 hours across OECD member countries. This longstanding gap has highlighted the limitations of the traditional model and increased pressure to bring Mexico’s labor framework closer to ILO guidelines, particularly Convention No. 47 and Recommendation No. 116, which promote the 40-hour workweek as a goal for improving workers’ well-being.
The Private Sector Perspective: Costs and Gradual Implementation
Mexico’s manufacturing and export maquiladora industries are particularly sensitive to shorter working hours because many operations depend on 24/7 production schedules and just-in-time delivery models required by global markets, especially the United States.
According to estimates from Index, Mexico’s maquiladora and export industries could need to hire approximately 600,000 additional employees to cover the working hours lost through the reduction and maintain current production volumes. This could create significant pressure on talent availability in northern border manufacturing hubs such as Ciudad Juárez and Tijuana, which already face challenges related to employee turnover, urban mobility, and the risk of production disruptions caused by border blockages.
The Adecco Institute estimates two possible economic scenarios for companies adapting their operations:
From an international competitiveness perspective, higher payroll costs without a comparable increase in efficiency could put Mexican manufacturing plants at a disadvantage against markets in Southeast Asia, such as India, Bangladesh, and Thailand, where standard workweeks remain at 48 hours.
The automotive sector has also expressed concerns. 23.44% of automotive companies anticipate significant cost increases, while 29.67% expect to completely reorganize their shifts and logistics distribution chains. Executives from companies such as BRP, Lear, and Adient have called for the reform to remain gradual in order to help reduce the impact of potential penalties tied to export contracts.
The Debate Over Gradual vs. Immediate Implementation
The legislative debate revealed differing views on mandatory rest days. Opposition lawmakers and several labor organizations criticized the reform for reducing the maximum workweek to 40 hours without explicitly requiring two consecutive days of rest. The law would continue to guarantee at least one fully paid day of rest for every six days worked. Opposition legislators argued that this could create a legal gap, allowing employers to spread the reduced hours across six working days and limiting the reform’s intended benefit of giving workers more time for family and personal life.
The official position of President Claudia Sheinbaum’s administration, supported by Morena leadership and the Secretary of Labor, was that in practice, an employee working the maximum eight hours per day under a 40-hour workweek would naturally receive two days of rest.
COPARMEX, meanwhile, has emphasized that the impact of the shorter workweek should be viewed together with other recent labor-related changes. Employers have already had to absorb additional costs associated with expanded mandatory vacation days, pension reform and higher employer retirement contributions, telework regulation, and the restrictions on labor outsourcing.
Juan José Sierra Álvarez, president of COPARMEX, also warned that micro and small businesses could face a risk of formal job losses if the government does not introduce tax incentives or administrative simplification measures during the transition.
The key to success will be the ability of companies to turn this regulatory challenge into an opportunity to rethink their operating models, invest in technology, and redesign their talent management strategies.
Companies that prepare ahead of the implementation timeline and take a proactive approach will not only be better positioned to comply with the law, but also to build a more sustainable competitive advantage in the global market.
40-Hour Workweek Reform: Mexico’s labor reform that gradually reduces the maximum weekly work schedule from 48 to 40 hours between 2027 and 2030.
Federal Labor Law (LFT): Mexico’s main labor law, which regulates working hours, rest periods, overtime, employer obligations, and other employment conditions.
UMA (Unit of Measurement and Update): A reference value used in Mexico to calculate fines, penalties, and certain government obligations.
REPSE: Mexico’s registry for specialized service providers. Companies using REPSE-registered suppliers must also ensure those providers comply with applicable labor and working-hour requirements.
When will Mexico’s 40-hour workweek take effect?
The gradual reduction begins on January 1, 2027, when the maximum workweek drops from 48 to 46 hours. It will continue decreasing by two hours each year until reaching 40 hours in 2030.
Will the 40-hour workweek require two days of rest?
The reform reduces the maximum weekly working hours, but it does not expressly require two consecutive days of rest in every case. How work schedules are distributed will depend on the applicable legal framework and the company’s operating model.
How will the reform affect overtime in Mexico?
Overtime may be paid at double the regular hourly rate within the permitted limits. Hours exceeding the weekly overtime limit may require triple pay.
How could the 40-hour workweek affect manufacturers in Mexico?
Manufacturers may need to reorganize shifts, hire additional employees, increase overtime, or invest in technology and productivity improvements to maintain current production levels with fewer regular working hours.
- Mexico’s transition to a 40-hour workweek will require more than a legal adjustment; companies will need to rethink how they organize shifts, productivity, and workforce planning.
- The gradual implementation from 2027 to 2030 gives employers time to prepare, but waiting until the last minute could create operational and cost pressures.
- Manufacturing companies may be especially affected because many depend on continuous operations, fixed production schedules, and just-in-time delivery requirements.
- Companies should begin reviewing shift structures, overtime exposure, electronic timekeeping systems, employment agreements, and specialized service providers before the first reduction takes effect.
- The companies best positioned for the transition will be those that use the reform as an opportunity to improve productivity, technology adoption, and talent management, rather than treating it only as a compliance requirement.
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Notice: The content of this blog is developed by Prodensa for informational and educational purposes regarding nearshoring, foreign trade, human capital, and manufacturing in Mexico. Although we strive to keep the information accurate and up to date, laws and regulations may change. This material is not a substitute for specialized professional advice. Prodensa is not responsible for decisions made based on this content without appropriate professional consultation.