Overview
- The new labour reform phases the statutory weekly workweek from 48 to 40 hours between 2027 and 2030 and makes an electronic register of working time mandatory starting January 1, 2027.
- The Secretaría del Trabajo y Previsión Social told employers they will have full freedom to choose or build the technology for the electronic register and that regulators will not impose technical specifications.
- Regulators plan to focus inspections on strict overtime rules — a maximum of 12 extra hours per week with daily distribution limits — and on whether electronic time records match CFDI payroll and IMSS/SAT filings.
- Failure to keep the required electronic records can trigger fines of 250–5,000 UMAs per worker (roughly 29,000–586,000 MXN) that can add up to multi‑million peso liabilities and may support temporary or permanent workplace closures.
- Employers are weighing in‑house systems against third‑party platforms as vendors press auditable solutions, and human resources teams must align timekeeping, payroll stamping and social‑security reporting to limit inspection, litigation and fiscal risks while turning time data into productivity insights.