---
title: "What the internal work regulations are · Sicheca"
description: "What the internal work regulations must contain and why to update them with the reform."
url: https://sicheca.com/en/blog/reglamento-interior-de-trabajo
lang: en
alternate_es: https://sicheca.com/blog/reglamento-interior-de-trabajo.md
---
Glossary · 2 min read

# What the internal work regulations are

Short answer

The internal work regulations are the document with the mandatory rules inside the company: schedules, breaks, pay days and disciplinary measures.

## What it must say about the workday

Start and end times, time to eat and rest periods.

## What to update because of the reform

- The schedules, to reach 46 hours.
- How working time is recorded.
- How overtime is authorized.

## Why everything starts with the working-time record

Almost every labor calculation starts from the same data point: how many hours and which days each person worked. If that data is uncertain, so is everything else.

- **Overtime:** it is paid according to the hours of each week.
- **Sunday premium and rest days worked:** they depend on which days were worked.
- **Aguinaldo and profit sharing:** they use the days worked in the year.
- **Labor lawsuits:** the company must prove the working time.

Since 2026, the Federal Labor Law requires that record to be electronic, per person, with start and end time.

## Common mistakes

- Using the UMA or minimum wage value from a previous year.
- Confusing daily salary, integrated salary and contribution base salary.
- Calculating benefits without knowing the days actually worked.
- Taking the legal minimums as if they were the maximum.
- Not keeping the backup of the calculation.

## What to do now

1. Confirm the current value for the year.
2. Have each person's daily salary at hand.
3. Check the days and hours worked in your record.
4. Do the math and keep it.
5. Validate it with your accountant.

## Related terms

**[Minimum wage in Mexico: how much it is and how it is used](https://sicheca.com/en/blog/salario-minimo-en-mexico).** The minimum wage is the least a person can receive for a workday.

**[Mixed shift: what it is and how long it lasts](https://sicheca.com/en/blog/jornada-mixta).** A mixed shift combines day and night hours, as long as the night hours are less than three and a half.

**[What is RESICO](https://sicheca.com/en/blog/que-es-resico).** RESICO is the Simplified Trust Regime (Régimen Simplificado de Confianza), a tax regime with reduced income tax rates for individuals and companies with income below certain limits.

## Frequently asked questions

### Does it have to be registered?

Yes, it is filed with the Federal Center for Conciliation and Labor Registration.

### Are the amounts gross or net?

Gross. They do not account for taxes or social security contributions.

### Can I use this for my payroll?

It works as a reference. Your accountant should do or validate the payroll calculation.

### Where does the data come from?

From the Federal Labor Law and from the official values published by INEGI and the National Minimum Wage Commission.

### Do these values change every year?

Yes. The UMA is updated every February 1 and the minimum wage every January 1. Always confirm the current value.

## Legal basis and sources

- [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

[ Glossary **What attendance control is**](https://sicheca.com/en/blog/control-de-asistencia) [ Glossary **What the UMA is and how much it is worth**](https://sicheca.com/en/blog/que-es-la-uma-y-cuanto-vale) [ Glossary **Minimum wage in Mexico: how much it is and how it is used**](https://sicheca.com/en/blog/salario-minimo-en-mexico) [ Law and fines **Is a time clock mandatory in Mexico?**](https://sicheca.com/en/blog/es-obligatorio-el-reloj-checador)

[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=reglamento-interior-de-trabajo&utm_content=final)