The NEBOSH International Diploma for Occupational Health and Safety Management Professionals (IDip) is a new qualification replacing the:

Delivery of this course commenced 1st June 2021. The previous syllabus will continue until 2026 to allow learners to complete their qualification. This qualification is ideal for those whose ambition is to be a “Safety Professional” and have a high level career in HSE management.


Benefits of achieving the NEBOSH International Diploma:

  • Valued by employers: NEBOSH Diploma holders get higher salaries (NEBOSH research)
  • Boost your career prospects: NEBOSH Diploma holders are in demand throughout the world
  • Use the letters ‘IDipNEBOSH‘ after your name
  • Entitled to graduate membership of IOSH (GradIOSH) & full membership of the IIRSM (MIIRSM)
  • Entry requirement for many safety related UK Masters programmes

The NEBOSH International Diploma for Occupational Health and Safety Management Professionals is based on international standards and best practice and builds on the knowledge gained at NEBOSH Certificate level. Whilst the knowledge gained from studying the NEBOSH Certificate is not repeated it is required to successfully complete the assessments. The qualification is made up of 3 units which must be completed within five years:

Unit ID1: Know – Workplace Health and Safety Principles (International)- 189 Hours including 60 hours for the assessment

This unit covers the following topics:

  • Socio-legal models; Enforcement; The International Labour Organization and its conventions and recommendations; Nongovernmental bodies and health and safety standards; Third parties; Insurers
  • Organisational structures; Leadership; Consultation; Health and safety culture / Behavioural change programmes; Traditional and proactive safety management; Risk perception; Human failures and factors / Improving human reliability
  • Competence, training, information and supervision; High reliability organisations
  • Hazard identification techniques; Managing health and safety risks; Risk management
  • Loss causation / Quantitative analysis of data; Measuring and monitoring
  • Professional skills
  • Societal factors; Corporate social responsibility; Organisation change; Contractors / Supply chains

Unit ID2: Do – Controlling Workplace Health Issues (International)- 145 Hours including 40 hours for the assessmentThis unit covers the following topics:

  • Occupational health services / Equality in the workplace; Mental ill-health / Wellbeing / Workplace violence / Lone working; Health surveillance; Hazardous substances; Health risks from hazardous substances; Epidemiology and toxicology; Asbestos and lead; Ventilation and PPE; Hazardous substances monitoring; Biological agents; Noise; Vibration; Radiation; Musculoskeletal issues / Manual handling; Workplace temperature /Welfare arrangements.

Unit ID3: Do – Controlling Workplace Safety Issues (International) – 135 Hours including 40 hours for the assessment

    This unit covers the following topics:
  • Safe working environment; Confined spaces; Fire and explosion, Fire; Dangerous substances; Work equipment and machinery maintenance; Work equipment; Machinery; Mobile work equipment / Lifting equipment; Electricity; Construction / Work at height / Demolition / Excavation; Workplace transport / Work-related driving


  • Unit ID1 is assessed by an assignment (in four parts – simulations, workplace based activities, reflective tasks and a research project). Part of the assessment will require learners to undertake some workplace-based activities so need to ensure that they select a suitable workplace/organisation. 
  • Units ID2 & ID3 are assessed by a case study 

Assessments will be available twice a year for each unit, with around a month allowed to complete the assignment and return them to NEBOSH.