Economy
October 19, 2026
End of the 6×1 scale: what do the numbers allow us to conclude?
After the promulgation of the end of the 6×1 scale, the debate on the shorter journey moves to implementation and requires distinguishing social benefits from economic costs
The end of the 6×1 scale moved from legislative discussion to a constitutional change in Brazil. On October 16, 2026, the National Congress enacted constitutional amendment nº 141/2026, originating from Constitutional Amendment Proposal (PEC) 221/2019. Two days earlier, the Senate had approved the proposal in two rounds, by 75 votes to one in each vote, after its approval by the Chamber of Deputies in May. The decision ended the legislative process, but has not yet answered questions about productivity, costs, and quality of life (Senado Federal, 2026a; Senado Federal, 2026b).
The amendment establishes two days of paid weekly rest, one of them preferably on Sundays, without salary reduction, and the reduction of the maximum workday from 44 to 40 hours. The application will be gradual: 60 days after publication, the limit will become 42 hours per week, with two days of rest; 12 months after this first stage, i.e., 14 months after publication, it will reach 40 hours. The rule also allows for adjustments through collective bargaining, observing constitutional requirements, and provides for specific treatments for certain employment relationships and work regimes. These are rules established by the amendment, not yet proven economic results (Senado Federal, 2026b).
The broad vote shows that the measure received parliamentary support from different political fields. This, in itself, does not demonstrate that all impacts will be positive nor that business concerns are no longer relevant. On the one hand, there is the hypothesis that more rest reduces fatigue and improves performance. On the other hand, companies may need to hire, redistribute shifts, or absorb costs. The most useful analysis consists of separating what has already been observed in research from what depends on projections and hypotheses.
There is an often-forgotten distinction: work schedule and weekly working hours are not the same thing. The former organizes the days worked and rest days; the latter establishes the total number of hours. A 44-hour workweek, for example, can be distributed over five days. The amendment alters both dimensions: it extends rest periods and reduces the hour limit. Confusing these effects even makes it difficult to define what should be measured.
Mathematics helps to delimit the issue. Reducing a 44-hour week to 40 hours corresponds to a 9.09% decrease in working time. If the hourly production is maintained, weekly production would also fall by 9.09%. For the produced volume to remain constant, however, hourly productivity needs to increase by 10%, not 9.09%. A worker who produces ten units per hour delivers 440 units in 44 hours. With 40 hours available, they would need to produce 11 units per hour to achieve the same result.
This is a mathematical break-even point, not a forecast. If hourly productivity increased by 5%, for example, weekly production would still be approximately 4.55% below the original. If it increased by 10%, the loss of hours would be fully compensated. In practice, results depend on equipment, organization, demand, service quality, and the possibility of transforming greater efficiency into effective production.
The intermediate stage also has its own account. The transition from 44 to 42 hours reduces weekly working time by 4.55%. To maintain production, hourly productivity would need to increase by 4.76%, a percentage that also represents an increase in the cost per contracted hour when the monthly salary is preserved. In the complete transition to 40 hours, the respective percentages are 9.09% and 10%. These calculations describe break-even points, without anticipating what will happen in companies.
The same calculation reveals the other side of the discussion. With the monthly salary preserved, the individual reduction from 44 to 40 hours increases the cost per contracted hour by 10%. This does not mean that the company’s payroll will automatically increase by 10%. If the number of workers remains unchanged, the monthly remuneration will stay the same; the additional cost will appear if it is necessary to make up for hours, hire people, pay overtime, or reorganize operations.
Consider a hypothetical company with ten employees working 44 hours per week. The team offers 440 hours of work per week. With a 40-hour workday, the team would offer 400 hours. If the company needs to maintain exactly the same number of hours, obtains no productivity gains, and hires one more employee under equivalent conditions, the simplified payroll will increase from ten to 11 salaries: a 10% increase. But the calculation can be different when the company manages to eliminate redundant tasks or, at the opposite extreme, needs to ensure the simultaneous presence of professionals.
An administrative activity can gain efficiency with fewer meetings, automation, and better-defined processes. On the other hand, a regulation that needs to function continuously requires physical coverage during all operating hours. A more rested guard can make fewer mistakes, but does not occupy two posts at the same time. Therefore, productivity per hour, total output, and coverage needs are distinct variables. This difference explains why the same legal change can have very different economic effects.
Scientific literature offers relevant evidence, especially regarding well-being. In a study published in Nature Human Behaviour, Fan et al. (2025) analyzed 2,896 workers from 141 organizations in six countries, following a four-day work week experiment without salary reduction. Improvements were observed in professional exhaustion, job satisfaction, and physical and mental health. The results are important, but they do not prove that all sectors will be able to compensate for the reduction in hours with equivalent productivity gains.
It is also necessary to consider what happens when working hours become excessive. Pencavel (2015), when examining historical records of the ammunition industry, identified a non-linear relationship between hours worked and production: beyond a certain point, each additional hour contributed proportionally less to the outcome. This contradicts the idea that increasing hours always increases production in the same proportion. However, the study does not demonstrate that a specific reduction from 44 to 40 hours will increase Brazilian productivity by 10%.
Historical evidence allows for an expanded discussion. In Portugal, the standard workday was reduced from 44 to 40 hours in 1996. Raposo and Van Ours (2010) identified a reduction in job destruction in part of the analysis of affected companies. In another study, the same authors observed that the change did not produce identical effects on all workers. Experiences of this nature indicate that impacts on employment should not be presumed, neither to predict a wave of layoffs nor to promise widespread hiring.
In Brazil, the numbers also require attention to the hypotheses. A technical note from the Institute of Applied Economic Research (Ipea), published in 2026, estimated an average increase of 7.84% in the cost of the CLT (Consolidação das Leis do Trabalho) worker’s hour in a scenario of adopting 40 weekly hours. This percentage is lower than the 10% in the individual example because not all workers start from 44 hours. When considering the participation of labor in the expenses of the sectors, the note estimated a direct increase of 0.74% in the total cost of manufacturing food products and 6.65% in surveillance, security, and investigation activities (Pateo, Melo e Círiaco, 2026). The results are estimates constructed with data prior to the change, not effects already verified after its implementation.
The National Confederation of Industry (CNI), in turn, projected a retraction of 0.7% in the gross domestic product (GDP), equivalent to R$ 76.9 billion, in a scenario of reducing the workday to 40 hours (CNI, 2026). The model assumes constant hourly productivity and considers the recomposition of lost hours through new hires. This is a simulation conditioned on these premises, not an economic loss already observed. The Ipea calculation and the CNI projection also do not measure the same variable: one estimates pressures on labor costs and sectoral expenses; the other projects macroeconomic impacts in a general equilibrium model. Presenting them as competing numbers for the same question would distort both.
The social side also needs to be taken into account. According to a survey by the Ministry of Labor and Employment released by the Federal Senate (2026b), approximately 14.9 million of the 44.7 million workers with identified working hours fulfilled the 6×1 shift. Four weekly hours represent, in a 52-week exercise, 208 fewer annual working hours, not considering vacations, leaves of absence, and calendar particularities.
For some families, this time can mean more togetherness, an opportunity to study, or to take care of their health. For others, it can be absorbed by commutes and unpaid domestic work. The benefits are not automatically distributed equally. A systematic review by Voglino and collaborators (2022) found favorable evidence in indicators of sleep, stress, and quality of life, but highlighted limitations of the available literature. Experiments with four-day workweeks and 32-hour weeks also do not automatically equate to the Brazilian transition to 40 hours distributed over five days.
With the enactment of the amendment, the question ceases to be whether the change will be approved and begins to include how its effects will be monitored. A consistent evaluation will need to observe hourly production, errors, absenteeism, turnover, wages, business margins, prices, employment, and health indicators. The analyses must distinguish between small and large companies, administrative activities, and continuous service provision. It will also be necessary to monitor the transition and compare the results with previous trends, avoiding attributing to the new rule changes caused by technology, demand, or economic conditions.
The new constitutional configuration may extend rest time and produce social benefits supported by studies, while the cost of adaptation could be significant in certain activities. The aggregate economic effects have not yet been observed, as the implementation will occur gradually. Mathematics clarifies the mechanisms: working more hours does not necessarily mean producing more; working less also does not guarantee greater productivity. Once the legislative decision is made, the challenge is to measure the real effects, understand the differences between sectors, and prevent projections from being confused with facts.
Complementary content — The calculations and scenarios presented in this column can also be followed in the video End of the 6×1 Scale: Working Less Means Producing Less? | Science and Mathematics.
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Who wrote this column
José Erasmo Silva
