The article presents the situation of a company of the Manufacturing Sector located in the state of Guanajuato, Mexico, which is dedicated to the manufacture of harnesses (wiring) for heavy equipment, supplies the needs of Mexico, the United States and Canada. We proceeded to start with the bases to begin Occupational Health and Safety Management in order to comply with the regulatory framework in the country of Mexico. The study includes the application of the HAZID methodology for the identification of hazards in the workplace, carrying out a Health and Safety Diagnosis and Program to establish the preventive and corrective measures that control, eliminate or replace the hazards detected in the following order: the design intention and the normal operating conditions of the areas through the recognition of the work environment and its processes, identify possible causes and consequences of the danger, identify the existing safeguards, mitigations and control, carry out a classification of the hazards according to their safety or environmental impacts through the priority of intervention for detected danger and identify recommendations and parts of action. As a result, 28 hazards were identified in the production, warehouse and administrative areas; the risks observed were electrical, mechanical, physical, chemical, biological, ergonomic, psychosocial, surrounding, natural and locative. 43 % of the dangers are moderate, 22 % important, 21 % tolerable, 7 % trivial and 7 % intolerable, therefore, it is proposed to comply with the requirements applicable by official Mexican standards, those responsible for acting and indicators of compliance measurement. To improve the in-depth situation of the organization, it is important to conduct a study on each of the applicable Normas Oficiales Mexicanas in occupational health and safety issues issued by the Ministry of Labor and Social Welfare according to the regulatory framework of Mexico. (C) 2020 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.