--- title: "Full proof: the value of the working-time record in a lawsuit · Sicheca" description: "What it means for the electronic record to have full evidentiary value and what is needed to achieve it." url: https://sicheca.com/en/blog/prueba-plena-registro-de-jornada lang: en alternate_es: https://sicheca.com/blog/prueba-plena-registro-de-jornada.md --- Law and fines · 3 min read # Full evidentiary value: the value of the working-time record in court Short answer The electronic record is full proof if it is shown that it was agreed between the worker and the employer. That is, by itself it proves the workday before a court. ## Why it matters In overtime claims, the company must prove the workday. Without controls, the worker's statement is usually taken as true within certain limits. ## The condition The agreement. Without it, the record is worth less as evidence. ## How to document the agreement In writing, signed by each person, with a description of how time is recorded. Ask your lawyer for the text. ## The reform in one minute The reform has two parts. On March 3, 2026, article 123 of the Constitution was amended to set the 40-hour workweek. On May 1, 2026, the Federal Labor Law was amended, which is where the detail is. - The maximum working week drops from 48 to 40 hours, two hours per year, between 2027 and 2030. - Overtime has a weekly cap: it is paid at double time up to the cap and at triple time for up to 4 more hours. - Each company must electronically record the start and end time of each person's workday. - Not keeping that record is fined 250 to 5,000 UMA. - Salary and benefits cannot go down because of the reduction in hours. What remains pending are the STPS general rules, which will define who the record applies to and what exceptions there will be. They take effect on January 1, 2027. | Year | Maximum working hours | Double-time overtime | Triple-time overtime | | --- | --- | --- | --- | | 2026 | 48 h | 9 h | 4 h | | 2027 | 46 h | 9 h | 4 h | | 2028 | 44 h | 10 h | 4 h | | 2029 | 42 h | 11 h | 4 h | | 2030 | 40 h | 12 h | 4 h | Decree published in the Official Gazette of the Federation on May 1, 2026, second and fourth transitory provisions, and article 68 of the LFT. Each change applies from January 1. ## Common mistakes - Assuming the obligation does not apply because you are a small business. - Believing a device or fingerprint is required. - Confusing the date the law took effect with the date of the STPS rules. - Reading the 2030 caps as if they already applied. - Trusting a provider that claims to be certified by the authority. ## What to do now 1. Read what article 132, section XXXIV, requires. 2. Review how you record your staff's clock-in and clock-out today. 3. Choose an electronic recording method. 4. Agree on it in writing with each person. 5. Check the STPS general rules when they are published. ## Related terms **[Aguinaldo: how much it is and how it is calculated](https://sicheca.com/en/blog/aguinaldo).** The aguinaldo (year-end bonus) is an annual payment of at least 15 days of salary, which must be paid before December 20. **[What is PROFEDET](https://sicheca.com/en/blog/que-es-la-profedet).** PROFEDET is the Federal Labor Defense Attorney's Office (Procuraduría Federal de la Defensa del Trabajo). **[What are the internal work regulations](https://sicheca.com/en/blog/reglamento-interior-de-trabajo).** The internal work regulations are the document with the mandatory rules inside the company: schedules, breaks, pay days and disciplinary measures. ## Frequently asked questions ### Where does the law say so? In the last paragraph of section XXXIV of Article 132 of the Federal Labor Law. ### Is the reform already in force? Yes. The reform to the Federal Labor Law took effect on May 1, 2026. The reduction in working hours starts on January 1, 2027. ### Who monitors compliance? The Ministry of Labor and Social Welfare, through inspections. ### Where do I find the official text? In the Official Gazette of the Federation of May 1, 2026 and in the current version of the Federal Labor Law published by the Chamber of Deputies. ### Does this replace the advice of a lawyer? No. It is general information. For decisions about your company, consult a labor lawyer. ## Legal basis and sources - Electronic working-time record: article 132, section XXXIV, of the LFT and fifth transitory provision of the decree. - Fines: articles 992, 994 and 1002 of the LFT. - Working hours: articles 58 to 64 of the LFT and second transitory provision of the decree. - [Decree amending the Federal Labor Law on the reduction of the working week](https://sidof.segob.gob.mx/notas/docFuente/5786537). Official Gazette of the Federation, May 1, 2026. - [Federal Labor Law, current text](https://www.diputados.gob.mx/LeyesBiblio/pdf/LFT.pdf). Chamber of Deputies. **How we write this content.** The Sicheca team writes it from the official text of the law. When something is not yet defined by the authority, we say so. It is general information and does not replace the advice of a lawyer or an accountant. ## Keep reading [ Law and fines **How to agree on the electronic record with your staff**](https://sicheca.com/en/blog/acuerdo-de-registro-electronico-con-trabajadores) [ Law and fines **What the working-time record must contain**](https://sicheca.com/en/blog/que-debe-contener-el-registro-de-jornada) [ Law and fines **STPS inspection: what they can ask for about working time**](https://sicheca.com/en/blog/inspeccion-stps-registro-de-jornada) [ Calculators **Overtime calculator**](https://sicheca.com/en/blog/calculadora-de-horas-extra) [See all articles](https://sicheca.com/en/blog/) Who publishes this blog Sicheca is a digital time clock for recording working time from your phone. We write these guides from the official text of the law, so any business can understand what applies to it. If you want to try it, there is a waitlist. [Join the waitlist](https://sicheca.com/en/lista-de-espera?utm_source=blog&utm_medium=articulo&utm_campaign=prueba-plena-registro-de-jornada&utm_content=final)