On January 1, 2027, Mexico's phased workweek reduction takes its first practical step: the maximum ordinary workweek moves from 48 to 46 hours. The reform has already been enacted. The remainder of 2026 should be used to compare agreed and actual working time, assess service coverage and decide what changes are needed for different job groups.
Amendments to the Federal Labor Law published on May 1, 2026 set a transition to 40 hours by 2030 without reducing pay or benefits. May through December 2026 was designated as an adjustment period, not simply an opportunity to defer operational decisions. Read the official decree.
This guide addresses the evidence and decisions employers should have in place before 2027: baseline data, operating scenarios, documentation, controls, manager training and practical testing. Detailed questions concerning shifts, role categories and HR governance are addressed in separate DLVMR articles.
Employers should be able to explain how working arrangements will operate, which agreed conditions need formalization and how hours actually worked will be documented.
The law phases in the reduction, but the first decisions belong in 2026
The enacted schedule sets maximum ordinary weekly hours at 48 in 2026, 46 in 2027, 44 in 2028, 42 in 2029 and 40 in 2030. Each step takes effect on January 1 of the relevant year. Not every employee currently works 48 hours; the operational impact depends on actual contracts and applicable arrangements.
Daily limits for day, night and mixed shifts, together with statutory rest requirements, remain relevant. A 40-hour ceiling does not, by itself, establish an identical five-day roster for every workplace. The distribution of working time must be assessed under Mexican law and applicable agreements.
The 2027 plan should also anticipate 2028 through 2030. A solution that only works for the first reduction may require further restructuring every January.
Maximum ordinary weekly working hours under the second transitional article of the May 1, 2026 decree.
Before changing schedules, reconcile four views of working time
The first step is neither buying timekeeping software nor circulating a new schedule. It is establishing, by workplace and job group, the difference between agreed, scheduled, actually worked and paid hours. Those four records may tell different stories.
Relevant inputs include daily schedules, rotating shifts, rest, leave, handovers, absences, overtime, pre-shift meetings and assignments completed after the planned end of the workday. A company-wide average can hide jobs that depend on recurring overtime or roles requiring continuous coverage.
The outcome should be a baseline that supports decisions, rather than a blanket assumption that every employee follows the same working pattern.
Agreed
Individual contracts, collective agreements, scheduled hours and rest conditions.
Scheduled
Shift rosters, handovers, coverage and planned service periods.
Worked
Clock-ins, clock-outs, incidents, pre- or post-shift activities and overtime.
Paid
Payroll reconciliation, incidents and ordinary or additional time.
Operating models require different responses to the shorter workweek
A two-hour weekly reduction affects different operations in different ways. Office teams with schedulable work may reorganize meetings, starting times or workload. In production, reducing each worker's hours may expose a gap in handovers or line coverage. Continuous services may require revised staffing, opening times and demand peaks.
Options may include mutually agreed redistribution, additional handovers, process improvements, recruitment or removing repetitive work. An arrangement is not legally valid merely because it solves an operating problem. Daily limits, rest, employment agreements and any applicable collective conditions must be checked.
For detailed treatment of these issues, read our articles on the shorter workweek by job type and shift coverage and business continuity.
Office and administrative teams
Potential approach: Reorganize meetings, coverage and schedulable workloads.
Check: Review hours, availability, agreements and out-of-hours tasks.
Manufacturing and shift-based teams
Potential approach: Assess handovers, staffing by production line and continuity.
Check: Check rest, fatigue, continuous operation and shift costs.
Extended-hours services
Potential approach: Review peak demand, opening times, on-call coverage and response.
Check: Validate staffing and the conditions for in-person or remote service.
Working-time limits, rest and agreed terms.
Capacity, safety, handovers and continuity.
Total cost, recruitment, payroll and technology.
Fatigue, travel, work-life arrangements and availability.
Which employment agreements and policies may need updating?
Whether employment documents must change is a case-specific question. Employers should not assume that every individual contract must be replaced. Equally, implementation should not proceed without examining the documents that govern actual working conditions.
Where schedules, rest days, handovers or availability practices may change, management should identify which agreement or policy addresses them and which formal steps apply. In unionized workplaces, the applicable bargaining framework must be respected; an internal handbook alone does not replace any agreement that legally requires formalization.
The objective is consistency among contractual terms, published rosters, supervisory instructions, working-time records and payroll. Documents alone cannot prove what actually occurred.
Avoid blanket replacement
Do not mass-amend contracts before identifying what each instrument and work model actually requires.
Review and formalize
Assess contracts, collective agreements, workplace rules, shifts and incentives based on their terms and the changes agreed.
Overtime is for exceptional needs, not a permanent replacement for capacity
The reform includes its own phased transition for overtime: the ordinary weekly limit under Article 66 remains at nine hours in 2026 and 2027, rising to 10 in 2028, 11 in 2029 and 12 in 2030. Additional work remains subject to the relevant statutory circumstances, limits and rates of pay.
Overtime can address genuine exceptions, but it should not become the standard way to replace every ordinary hour lost through the workweek reduction. Where a team repeatedly needs the same additional hours, the underlying issue may be staffing, shift design, production processes or planning.
The review should reconcile authorizations, time actually worked, electronic records and payroll. A policy limited to preapproved overtime can miss hours that employees actually work under operational instructions.
Ordinary weekly overtime limit set for 2027, subject to all applicable statutory conditions.
Electronic time records: prepare the evidence without assuming missing technical rules
Article 132(XXXIV) of the Federal Labor Law introduced electronic working-time records, including the start and end of work, which must be made available to authorities when legally required. The provision directs the Ministry of Labor (STPS) to issue general rules determining coverage and exceptions. Under the fifth transitional article, those general rules are scheduled to take effect from January 1, 2027.
Employers need to distinguish the obligation established by law from the technical scope or exceptions to be defined by the applicable implementing rules. It would be premature to assume that one type of device or software applies to every company. Before purchasing a system, assess whether existing tools can accurately cover different sites, shift patterns, changes, incidents, traceable corrections and payroll reconciliation.
The specific regulations and their publication should be verified before committing to a particular technical requirement. This overview is not a substitute for reviewing any subsequent rules. For a closer examination, see our article on electronic working-time records.
Capture
Start and end of work by relevant site, schedule and employee where applicable.
Explain
Incidents, approvals, corrections and changes to scheduled working time.
Reconcile
Compare records with payroll and preserve reliable evidence.
The decree does not itself prescribe a device for every employer. The scope and exceptions for electronic recording must be checked against the applicable general regulations.
Implementation needs coordinated decisions rather than disconnected tasks
HR can coordinate the program, but Operations owns coverage; Finance models costs; Payroll reconciles actual hours; Technology supports reliable records; Employment Legal assesses agreed conditions; and line managers apply working arrangements. Labor Relations must also support the appropriate process where collective agreements are involved.
The organization needs a clear decision process: which model is adopted for each job group, who validates employment terms, what must change in systems and how those decisions will be communicated. Without coordination, an employer may end up with three different workweeks—the one described in contracts, the one configured in systems and the one actually performed.
See our separate guide to how Human Resources should lead implementation for a fuller discussion of accountability.
Service coverage, demand periods and shift alternatives.
Agreed conditions, formal changes and collective bargaining where relevant.
Program coordination, communications, incidents and pay.
Data traceability and staffing or cost scenarios.
A seven-step roadmap for testing the model before 2027
The final weeks of 2026 can be used to close gaps, not simply to prepare management presentations. The following sequence follows the logic of the original DLVMR article: establish the facts, evaluate options, formalize the necessary changes and test them in practice.
Any pilot should include representative functions and shifts, compare scheduled and actual hours and detect coverage, fatigue, approval or recording problems. A practical test does not replace the formal employment process where required, but it may uncover problems before the first statutory reduction.
- Establish the baseline
Document agreed hours, actual hours, overtime, rest, systems and arrangements by job group.
- Segment the impact
Identify sites and functions that rely most heavily on long schedules or continuous coverage.
- Model alternatives
Compare shifts, redistribution, recruitment and process changes for cost, legal and operating impact.
- Choose and validate
Set a model by function and assess the employment implications before implementation.
- Formalize and configure
Update the documents, recording rules and payroll settings that require changes.
- Prepare managers and teams
Explain arrangements, schedules, approvals, incidents and accountability.
- Pilot and correct
Test real operations and reconcile hours, coverage, rest and payments.
Is the business ready to operate within a 46-hour ordinary workweek?
The final assessment should be grounded in evidence by job group. If an answer rests entirely on an assumption or a generic announcement, the operating model may not be ready for the 46-hour workweek. The following questions are an indicative readiness check, not a legal certification.
Employers should also consider the later transition to 44, 42 and 40 hours rather than assuming one roster will fit every employee or remain workable in every year.
Nine questions that deserve evidence-backed answers
Start 2027 with a tested operating model, not merely a revised schedule
The first two-hour reduction begins a transition that will continue through 2030. Employers can use the end of 2026 to validate working arrangements, staffing coverage, time actually worked, electronic records and pay. Readiness depends on consistency between those elements, not the volume of new documentation.
At De la Vega & Martínez Rojas, a company-facing review should begin with the actual operating model and applicable employment conditions, followed by an assessment of which instruments and procedures require change.
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