Institution of Occupational Safety and Health (IOSH)

The Institution of Occupational Safety and Health (IOSH) is the leading professional body for occupational safety and health professionals in the United Kingdom. Founded in 1945 and Royal Chartered since 2002, it represents tens of thousands of professionals and operates in over 130 countries through membership, training, and policy advocacy.

In short

IOSH is a British chartered professional body, a registered charity, which awards membership categories such as Chartered Member (CMIOSH), organizes continuing professional development, delivers widely disseminated courses such as IOSH Managing Safely and IOSH Working Safely and is involved in positioning occupational safety and health policies.

Content
  1. What is IOSH
  2. What does it mean to be a chartered organization?
  3. Purpose and scope of action
  4. Functions and main lines of work
  5. Contribution to safety and health at work
  6. Relationship with the ORP International Foundation
  7. Practical application
  8. Related concepts
  9. References

Organizations →

What is IOSH

IOSH defines itself on its own website as the chartered body for occupational safety and health professionals in the United Kingdom. It is a registered charity in England and Wales (number 1096790) and in Scotland (number SC043254), and has international non-governmental status.

IOSH is not a regulator. It does not issue binding regulations nor does it have the power to sanction companies or workers. That function in the United Kingdom belongs to the Health and Safety Executive (HSE), an independent public body. IOSH, on the other hand, is a professional body: it certifies individual competencies, sets standards of practice, and represents the profession to institutions and employers.

Founded in 1945, IOSH received its Royal Charter in 2002, a formal recognition from the British Crown that places it among the UK’s professional chartered bodies, in the same institutional category as colleges of engineers, architects, or accountants. Its headquarters are in Wigston, Leicestershire, and its activities extend to more than 130 countries through a network of members, affiliates, and training agreements.

What does it mean to be a chartered organization?

In the British professional system, the status of “chartered body” means that an organization has received formal recognition from the Crown to regulate a profession: setting standards of competence, awarding recognized professional qualifications, and ensuring the ethical conduct of its members. It is not an honorary title or a mere trademark, but a legal entity with its own history in the United Kingdom, comparable to a professional association in continental systems, although its origins and operation differ.

For IOSH, the Royal Charter of 2002 elevated its role: from that date, its higher categories of membership, in particular that of Chartered Member (identified by the acronym CMIOSH), constitute a recognized professional title in the United Kingdom to certify the experience and technical competence of an occupational safety and health professional.

Purpose and scope of action

IOSH states its purpose as the world’s largest professional organization for those working in occupational safety and health, with more than 50,000 members. Its scope of action combines individual professional certification, corporate training, and advocacy for the profession before governments and international organizations.

Although its origin and legal framework are British, the dissemination of its courses and its professional brand has widely crossed the borders of the United Kingdom, with a relevant presence in Europe, the Middle East, Asia and, to a lesser extent, Latin America, where its training programs frequently appear in tender documents and in the training offer of multinational companies.

Functions and main lines of work

IOSH’s activity is organized around several axes declared in its own institutional documentation.

  • Professional membership. It offers different categories, from student membership to Chartered Member (CMIOSH), including intermediate levels that recognize different levels of experience and qualification in prevention.
  • Continuing professional development (CPD). It maintains a framework of competencies and self-assessment tools for its members to document and update their training throughout their professional career.
  • Training courses. Through a network of accredited providers, it offers internationally recognized courses such as IOSH Working Safely, aimed at all workers, and IOSH Managing Safely, aimed at managers and team leaders.
  • Positioning in public policy. It states that it develops technical positions on key occupational safety and health issues and collaborates with governments and other organizations in policy development.

Contribution to safety and health at work

IOSH’s contribution is primarily professionalizing: it certifies that those holding a membership category, and in particular the status of Chartered Member, meet standards of technical competence and ethical conduct formally recognized in the United Kingdom. This individual certification is distinct from a management system certification such as ISO 45001 , which is awarded to an organization, not an individual.

Their second contribution is training. The IOSH Working Safely and IOSH Managing Safely courses have become international benchmarks for basic and management OSH training , regularly featured in company training programs and recruitment requirements outside the UK, including Spain and several Latin American countries, where they coexist with the regulated training of each national system without replacing it.

IOSH also participates, along with other professional safety and health organizations, in international accredited training initiatives linked to the Vision Zero strategy of the International Social Security Association (ISSA), aimed at extending a preventive culture of zero accidents and zero injuries at work.

Relationship with the ORP International Foundation

IOSH is listed on the ORP International Foundation’s institutional advisory committee as the leading British professional body for occupational safety and health, holding a Royal Charter since 2002 and operating in over 130 countries. Its long history, founded in 1945, and its international reach distinguish it from other committee members with more recent or local establishments.

Practical application

For an occupational health and safety technician operating outside the UK, IOSH’s useful reference is usually twofold: firstly, its Working Safely and Managing Safely courses as an internationally recognized training supplement; secondly, its Chartered Member status as a credential that, without replacing the legal authorization of each country, can add curriculum value in multinational environments or in tenders that require British professional accreditations.

For an organization that contracts services or training in several countries, knowing that IOSH is a professional body, not a regulator, helps to correctly interpret its certifications: they accredit competence and good professional practice, but do not exempt from compliance with the applicable safety and health regulations in each jurisdiction.

Related concepts

  • OSH training .The IOSH Working Safely and Managing Safely courses are widely used training references outside the United Kingdom.
  • Occupational risk prevention technician .Professional profile targeted by IOSH membership categories and qualifications.
  • Prevention culture .Framework to which the training and positioning activity of IOSH contributes.
  • ISO 45001 .Management system certification, distinct in nature from the individual competence certification granted by IOSH.

References

  1. Institution of Occupational Safety and Health (IOSH). About IOSH. Accessed: September 3, 2026. https://iosh.com/about
  2. Institution of Occupational Safety and Health. Membership: Categories and Requirements. Accessed September 3, 2026. https://iosh.com/membership/
  3. ORP International Foundation. ORP Institutional Advisory Committee. Accessed September 3, 2026. https://fiorp.org/comites/comite-asesor-institucional-orp/

Editorial information

Last revision: September 5, 2026 .

Editorial Manager: Sabentis Editorial Team .

First editorial review by Pablo Rodríguez LinkedIn

Executive Vice President of the ORP International Foundation and Chief Financial Officer of Sabentis.

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