The New Workday in Mexico. How companies should prepare for the shift towards 40 hours. By CPC Adriana Rodriguez Carrion. A historic change that has already begun. Mexico is entering one of the most significant labor transformations of recent decades. In March 2026, the constitutional reform was published that establishes a reduction of the workweek from 48 to 40 hours, marking a turning point in the way work is done in the country. Unlike other reforms, this one will not be immediate. The legislator opted for a gradual model, which will begin in 2027 and conclude in 2030, reducing working hours by 2 hours per year until reaching the goal of 40 hours per week. The approved schedule is as follows: 2026, 48 hours, year of preparation. 2027, 46 hours. 2028, 44 hours. 2029, 42 hours. 2030, 40 hours. Furthermore, the reform makes one key point clear for companies. There will be no reduction in salaries or benefits, which means that the same labor costs must be sustained with fewer working hours. This change seeks to align Mexico with international standards, improve the quality of life of workers, and at the same time, encourage business productivity. Beyond the law, a business paradigm shift. Although the reform is labor-related, its impact is profoundly strategic. It's not just about working fewer hours, it's about working better. Companies that view this transition as a legal obligation will be at a disadvantage compared to those that understand it as an opportunity to redesign processes. Incorporate technology. Improve operational efficiency. Strengthen your organizational culture. Reducing working hours is not a compliance challenge, it's a productivity challenge. Main impacts for businesses. Pressure on productivity. Companies will need to produce the same or more in less time. This will require eliminating inefficiencies, downtime, and redundant processes. Indirect increase in labor costs. Although the salary does not change, the cost per effective hour worked does increase, which directly impacts margins, especially in labor-intensive sectors. Reconfiguration of work schedules and shifts. Sectors such as manufacturing, commerce, services, and health will need to redesign their work schemes to cover operations without affecting business continuity. Greater importance of human capital. Talent management will be critical. A motivated and skilled employee can compensate for reduced hours with increased productivity. How companies should prepare starting today. 1. Operational and labor diagnosis. By 2027, companies must respond. How many effective hours are actually worked today? Where are the bottlenecks? Which processes are unproductive? This analysis will allow us to anticipate the real impact of the reduction. 2. Process redesign. Operational efficiency will be key. Applying continuous improvement methodologies will help to reduce waste. Optimize time. Simplify operations. 3. Automation and digitization. Technology will be a great ally. A automation of administrative processes. Artificial intelligence. Collaborative tools. Companies that invest in technology today will have a competitive advantage tomorrow. 4. New work schemes. It will be necessary to explore alternatives such as flexible work schedules, hybrid or remote work, staggered shifts. This will allow operations to continue without significantly increasing costs. 5. Training and organizational culture. It's not enough to reduce hours, we must improve performance. Investing in training will allow us to improve technical skills. Strengthen leadership. Increase individual productivity. 6. Financial planning. Companies must anticipate scenarios. Will the need to hire more staff increase? Will there be an impact on prices? How will the margins be adjusted? Risks of not preparing. Companies that ignore this transition may face decreased productivity. Increase in operating costs. Staff turnover. Regulatory noncompliance. A loss of competitiveness. In contrast, those that anticipate this change will be able to turn it into a strategic advantage. An opportunity to evolve. Historically, reductions in working hours around the world have generated similar fears. Decreased productivity, increased costs, and economic repercussions. However, in many cases the opposite has occurred. More efficient companies, more engaged employees, and better long-term results. Mexico is no exception. The gradual implementation of the reform is not a concession, but a strategic opportunity for companies to transform themselves without jeopardizing their stability. The question is no longer whether companies agree with reducing the workday. The real question is are they ready to operate with a more efficient, more humane, and more competitive model? Companies that understand this change as a natural evolution of the labor market will be the ones that lead the future. Those that see it as a burden will simply try to survive. 2027 is not the beginning of change. Change begins today.