Article 423 of the Mexican Federal Labor Law:
The regulations shall contain:
- Hours of entry and exit of workers, time allotted for meals and rest periods during the workday;
- Place and time at which they must begin and end the workday;
- Days and hours set for cleaning the establishments, machinery, apparatus and working tools;
- Days and places of payment;
- Rules for the use of the seats or chairs referred to in article 132, section V;
- Rules for preventing work risks and instructions for rendering first aid;
- Unhealthy and dangerous work that must not be performed by minors and the protection that pregnant workers must have;
- Time and manner in which workers must submit to medical examinations, prior or periodic, and to the prophylactic measures dictated by the authorities;
- Permits and leaves of absence;
- Disciplinary provisions and procedures for their application. Suspension from work, as a disciplinary measure, may not exceed eight days. The worker shall have the right to be heard before the sanction is applied; and
- The other necessary and convenient norms according to the nature of each company or establishment, to achieve the greatest safety and regularity in the development of the work.