Electronic working-time records became part of Mexico's Federal Labor Law through the decree published on May 1, 2026. The reform calls for records of the start and end of working time and for those records to be provided to labor authorities when lawfully requested. Implementation, however, must be assessed alongside the general rules to be issued by the Ministry of Labor and Social Welfare (STPS), including any relevant exceptions.
The business decision is not simply which software to buy. It is how to maintain reliable evidence, align controls with actual operations and apply proportionate data protection practices. This analysis explains Article 132, the transition toward 2027, the statutory penalty range and the matters employers should review before selecting a system.
The electronic recording obligation is already in the Federal Labor Law. Its practical scope and exceptions must be read together with the STPS general rules.
What Article 132 requires—and what it leaves to further rules
Article 132(XXXIV) provides for electronic records of each employee's working time, including start and end times, and production of those records to labor authorities when requested. It also states that records have full evidentiary value where it is established that their content was agreed between the employer and the employee.
The statute directs the Ministry of Labor and Social Welfare to issue general provisions determining which employers fall within the obligation and the exceptions that apply. Employers can begin assessing their systems now, but no specific device, vendor, biometric method or official format should be represented as mandatory without reviewing the applicable secondary regulation.
The statutory requirement should be distinguished from technical choices that may improve the reliability of internal timekeeping.
What the decree establishes
Electronic working-time records with start and end times, produced to the authority as applicable. Full evidentiary value depends on establishing an agreement between the parties.
Scope and exceptions
The STPS must define coverage and relevant exceptions through general provisions. The decree provides that these rules take effect beginning in January 2027.
How to build reliable records
Assess record attribution, traceable corrections, payroll reconciliation, access controls and retention. These are governance design considerations, subject to applicable final rules.
What changes between May 2026 and January 2027
The decree took effect on May 1, 2026. Transitional Article Three designates May through December 2026 for employers and employees to adjust work processes, while Transitional Article Five establishes January 1, 2027 as the starting date for the general rules governing electronic recording.
This does not mean that all employers must already use a single prescribed system or that existing duties to maintain relevant employment records can be ignored during the transition. Applicable documentary and evidentiary duties remain relevant. The sensible approach is to prepare operational processes and review the final general provisions that apply to each employer.
Review attendance records, real schedules, shifts, policies and payroll consistency. The amendment was published on May 1.
From January 1, the general provisions contemplated by the law take effect and determine scope and exceptions to the new duty.
What a verifiable working-time record should support
Start and end times are the two details expressly identified in the new statutory provision. But an isolated timestamp has limited operational value if it cannot be attributed to an employee, a shift or subsequent corrections. Reliable implementation should produce records that can be understood and retrieved, without confusing technical recommendations with requirements not established by applicable rules.
- Capture
Record the actual start and end of working time.
- Check
Identify discrepancies, errors and changes requiring review.
- Retain
Protect versions, access and corrections through security controls.
- Retrieve
Make relevant evidence available in response to a lawful request.
This workflow is a recommended record-governance approach, not an official STPS technology specification.
What different workplace arrangements need to consider
Implementation can look very different in continuous manufacturing, a hybrid organization or a business where performance is evaluated by project. The secondary rules will determine coverage and exceptions, so these cases should be analyzed without assuming that every worker is subject to identical requirements.
Reconcile clock-in and clock-out data, handovers, rest breaks and overtime against staffing schedules, supervision and payroll.
Consider how effective working time can be evidenced and how data processing is explained, without assuming continuous monitoring is necessary.
Review applicable working-time arrangements; job classification does not replace an assessment of coverage and exceptions.
Distinguish measuring deliverables from recording time, without assuming that project-based compensation removes all working-time duties.
Administrative penalties, evidence and personal data
Article 994(IV Bis) establishes penalties of 250 to 5,000 Units of Measurement and Adjustment (UMA) for an employer covered by the duty who fails to comply with Article 132(XXXIV). The decree does not itself prescribe an automatic fine per employee. Any monetary assessment depends on the legal conditions, applicable rules and enforcement procedure.
In employment proceedings, time records may help substantiate hours and payments, but their evidentiary weight must be assessed alongside other material and procedural rules. It would be inaccurate to say that any recordkeeping failure automatically proves all claimed overtime. Article 132 itself conditions the electronic record's full evidentiary value on establishing agreement between the parties.
Statutory penalty range under Article 994(IV Bis) for a covered employer that does not comply. This is not a fixed fine or an amount automatically multiplied by headcount.
Evidentiary risk
Inconsistent records can make it harder to substantiate working time, rest days or overtime, particularly when they conflict with other operational evidence.
Privacy risk
Where personal data are processed, employers must assess purpose, privacy notice and security safeguards. Biometrics or geolocation require a specific review; they are not expressly mandated by this reform.
What employers should do before selecting a timekeeping platform
Buying software does not, by itself, resolve discrepancies between schedules, authorizations, contracts and hours actually worked. The recommended sequence begins with the business: document the operation, improve procedures and only then choose tools that faithfully reflect them.
- Audit existing records
Identify workplaces, work arrangements, attendance methods, recurring errors and additional evidence sources.
- Match schedules to documentation
Review contracts, internal regulations, shift patterns, rest periods, overtime approvals and payroll processes.
- Assign owners and controls
Decide who reviews incidents, who can edit records, how corrections are logged and how requests from authorities are handled.
- Assess technology and privacy
Compare alternatives by data quality, accessibility, security, integration and proportionality of personal-data processing.
- Review applicable STPS rules
Confirm coverage and exceptions as appropriate, adjust the implementation and train HR teams and supervisors.
The value of timekeeping lies in the quality of the evidence
Electronic working-time records bring time management into the design of employment compliance processes. Employers with consistent and reliable records are better placed to review discrepancies and respond to official requests, subject to the rules applicable to their operations.
For a broader look at overtime and the shorter workweek, see our article on working-time records and the 40-hour reform and the analysis of the amended Federal Labor Law provisions.
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