ISO45001 occupational health and safety management system is an international standard jointly launched by 13 organizations including British Standards Institution (BSI) and Det Norske Veritas (DNV) in 1999. It is the basis for organizations (enterprises) to establish occupational health and safety management systems. It is also the main basis for enterprises to conduct internal audits and certification bodies to implement certification audits. It is another hot spot following the implementation of ISO9000 and ISO14000 international standards.

The ISO45001 series of standards and the resulting occupational health and safety management system certification system is another certification system for management system standards that has swept the world in recent years. The ISO45001 series of standards are international standards jointly launched in 1999 by 13 organizations such as British Standards Institution (BSI) and Det Norske Veritas (DNV). Among them, the ISO45001 standard is a certification standard, which is the basis for organizations (enterprises) to establish occupational health and safety management systems, and is also the main basis for enterprises to conduct internal audits and certification bodies to implement certification audits. China has been transformed into the national standard on November 12, 2000: GB/T28001-2001 idtISO45001:1999 "Occupational Health and Safety Management System Specifications". On December 20 of the same year, the State Economic and Trade Commission also launched the "Occupational Safety and Health Management System Audit Specification" and launched an occupational health and safety management system certification system in China. The national standard "Requirements for Occupational Health and Safety Management System" has been updated to GB/T:280012011 version on December 30, 2011, which is equivalent to the translation of the new ISO45001:2007 standard (English version), and implemented on February 1, 2012.

As we all know, in people's work activities or working environment, there are always such potential sources of danger, which may damage property, harm the environment, affect human health, and even cause injury accidents. These hazards are chemical, physical, biological, ergonomic and others. People refer to the possibility of accidents caused by one or some hazards and their possible consequences as risks. Risk can be assessed by indicators such as probability of occurrence, scope of harm, and size of loss. The object of modern occupational safety and health management is occupational safety and health risks.

In order to clarify the basic requirements of the occupational safety and health management system, encourage employers to adopt reasonable occupational safety and health management principles and methods, control their occupational safety and health risks, and continuously improve occupational safety and health performance, the occupational safety and health management system audit specification is specially formulated.

This specification applies to any employer who wishes to:

(1) Establish an occupational safety and health management system to effectively eliminate and minimize the risks related to the activities of the employer that may be suffered by employees and other relevant personnel;

(2) Implement, maintain and continuously improve its occupational safety and health management system;

(3) Ensure compliance with its stated occupational safety and health policy;

(4) Demonstrate its occupational safety and health work principles to the society;

(5) Seeking external agencies to certify and register its occupational safety and health management system;

(6) Self-evaluation and declaration of compliance with this specification.

All requirements set out in the code are intended to assist the employer in establishing an occupational safety and health management system, and the extent of its application depends on the employer's occupational safety and health policy, the characteristics of the activity and the nature of its risks and the complexity of the operation.