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NEBOSH Diploma Syllabus

NEBOSH Diploma Syllabus

Astutis is a NEBOSH accredited centre number 807 The NEBOSH National Diploma for Occupational Health and Safety Professionals provides an in-depth look into health and safety legislation, hazardous agents, equipment, and workplace safety. It develops the skills and knowledge to become a competent health and safety practitioner.

The syllabus builds directly upon the knowledge and skills gained from the NEBOSH General Certificate. 

Studying outside the UK? Take a look at the NEBOSH International Diploma course.

Learning outcomes

By the end of the course, you'll be able to:

  1. Source, develop, evaluate and interpret relevant health and safety information (such as legislation, guidance, best practice, procedures) and communicate it effectively to those who need it (both within your organisation and those affected by your organisation’s activities such as contractors and insurers).
  2. Promote a positive health and safety culture by
    • gaining commitment and participation; and
    • engaging, supporting, and influencing leaders (and others) to change attitudes and behaviour and make health and safety a priority.
  3. Assess, develop and maintain individual and organisational health and safety competence.
  4. Understand risk management, including the techniques for identifying hazards, the different types of risk assessment, considerations when implementing sensible and proportionate additional control measures, and developing a risk management strategy.
  5. Develop and implement proactive and reactive health and safety monitoring systems and carry out reviews and auditing of such systems.
  6. Continually develop your professional skills and ethics to actively influence improvements in health and safety by providing persuasive arguments to workers at all levels.
  7. Develop a health and safety policy strategy within your organisation (including proactive safety, Corporate Social Responsibility and the change management process).
  8. Contribute to health and safety legal actions.
  9. Manage contractors and supply chains to ensure compliance with health and safety standards.
  10. Advise the organisation on a range of common workplace health issues/ hazards, including how these can be assessed and controlled and the legal duties associated with these issues/hazards.
  11. Advise the organisation on a range of common workplace safety issues/ hazards, including how these can be assessed and controlled and the legal duties associated with these issues/hazards.

Full course syllabus

ND1: Workplace Health and Safety Principles

This unit provides an in-depth understanding of the key areas for managing health and safety. It covers moral, economic and societal drivers, health and safety law and management systems. 

  • 1.1 Health and safety regulations
  • 1.2 Prosecutions
  • 1.3 Enforcement
  • 1.4 Civil law
  • 1.5 Damages and liabilities
  • 1.6 Occupiers liability
  • 1.7 Lawful discrimination
  • 1.8 Insurers
  • 2.1 Organisational structures
  • 2.2 Leadership
  • 2.3 Consultation
  • 2.4 Health and safety cultures
  • 2.5 Traditional and proactive safety management
  • 2.6 Risk perception
  • 2.7 Human failures and factors
  • 3.1 Competence, training, information and supervision
  • 3.2 High-reliability organisations
  • 4.1 Hazard identification and techniques
  • 4.2 Managing health and safety risks
  • 4.3 Risk management
  • 5.1 Loss causation and quantitative analysis of data
  • 5.2 Measuring and monitoring
  • 6.1 Professional skills
  • 7.1 Societal factors
  • 7.2 Corporate social responsibility
  • 7.3 Organisation changes
  • 8.1 Civil proceedings
  • 8.2 Coroners inquest
  • 8.3 Criminal proceedings
  • 8.4 Ethical issues
  • 9.1 Contractors supply chains

ND2: Controlling Workplace Health Issues

Unit 2 gives an in-depth understanding of all major aspects of managing chemical, biological, physical and physiological hazards in the workplace.

  • 10.1 Occupational health and safety services
  • 10.2 Mental ill-health, wellbeing, workplace violence, lone working
  • 10.3 Health surveillance
  • 10.4 Hazardous substances
  • 10.5 Health risks from hazardous substances
  • 10.6 Epidemiology and toxicology
  • 10.7 Asbestos
  • 10.8 Ventilation and PPE
  • 10.9 Hazardous substance monitoring
  • 10.10 Biological agents
  • 10.11 Noise
  • 10.12 Vibration
  • 10.13 Radiation
  • 10.14 Musculoskeletal issues and manual handling
  • 10.15 Workplace temperatures and welfare arrangements

ND3: Controlling Workplace Safety Issues

Unit 3 provides a thorough understanding of how to create a safe working environment It covers welfare, fire, dangerous substances, work equipment, electricity, construction and transport. 

  • 11.1 Safe working environment
  • 11.2 Confined spaces
  • 11.3 Fire and explosion
  • 11.4 Fire
  • 11.5 Dangerous substances
  • 11.6 Work equipment and machinery maintenance
  • 11.7 Work equipment
  • 11.8 Machinery
  • 11.9 Mobile work equipment and lifting equipment
  • 11.10 Electricity
  • 11.11 Construction, work at height, demolition, excavation
  • 11.12 Workplace transport, work-related driving

NEBOSH Diploma Assessment

The NEBOSH Diploma is assessed entirely through practical activities and scenario-based questions.

Unit ND1 is assessed with a practical assignment split into four sections:

  • Section 1: Scenario-based questions
  • Section 2: Workplace activities
  • Section 3: Reflective tasks
  • Section 4: A short research project

NEBOSH recommends you spend around 60 hours on your ND1 assignment. You will have 6 weeks (30 working days) to complete your assignment and submit it electronically.

Units ND2 and ND3 are each assessed with a case study and scenario based questions. NEBOSH recommends you spend around 40 hours on each assessment paper. You will have 4 weeks (20 working days) to complete each assessment and submit it electronically.

NEBOSH Diploma Pass Marks

You must achieve a pass in all three units to achieve your full NEBOSH Diploma. Once you’ve passed all units, your marks will be added together and you’ll be awarded your final qualification grade.

  • Pass 150-195 marks
  • Credit 196-255 marks
  • Distinction 226+ marks 


The length of time taken to complete the NEBOSH National Diploma course varies according to mode of study. Candidates have a period of 5 years from enrolment to completing their NEBOSH National Diploma exams. 
Like other NEBOSH courses, the NEBOSH Diploma does not expire. However, it is best to keep up to date with the latest legislation and health and safety news. You can do this by reviewing the latest syllabus, subscribing to health and safety blogs and by attending health and safety events. Read more here.
As a NEBOSH learner you have your own login to a portal containing unique health & safety information, events for tailored Continuing Professional Development, networking opportunities a biannual journal exploring recent health and safety research. The NEBOSH National Diploma qualification meets the academic requirements to apply for Graduate Membership (Grad IOSH) of Institution of Occupational Safety and Health (IOSH). It is the first step to becoming a Chartered Health and Safety Practitioner as a chartered Member of IOSH (CMIOSH). The next step is completing a Skills Development Portfolio. Once you have passed all of the units you will also need to maintain your continuing professional development (CPD). You will be asked to attend a peer review interview.
You need to have a foundation understanding of health and safety principls before taking the NEBOSH Diploma. We strongly recommended that you take the National General Certificate or have at least 5 years experience working in a health and safety role to increase your chance of passing
Choosing a provider for the NEBOSH Diploma can be tough. There are a lot of providers to choose from and you want to ensure you get the most from your money. Astutis' advice is to look at online online reviews and testimonials to see what past learners think. You could also try to understand what their average pass rates are - this reflects on the quality of training and learning support. Reviewing what learning material you will have access to and whether or not the provider offers a learning method that's right for you is also really important.
The NEBOSH Diploma is a level 6 qualification which is equivalent to a Foundation level Degree. According to the National Qualifications Framework, this equates to around 2/3 of a full Batchelor's degree.
For people outside of the UK we recommend the NEBOSH International Diploma course on our international courses website.
The NEBOSH Diploma course is available in two versions. National for UK based learners and International for learners outside the UK. Both courses are equal to one another however the syllabus is slightly different and is tailored to legislation in different parts of the world.
All Astutis tutors are experienced health and safety professionals and leaders within their field. With vast industry knowledge gained from experience, our tutors are also educationalists who hold teaching qualifications, masters degrees or doctorates. Additionally, as NEBOSH examiners they are ideally placed to guide and coach delegates to ensure success. For those studying online, with our award-winning LMS, delegates are able to further interact outside of the classroom by way of our tutor-led discussion forum and notice boards. Tutors are able to pose questions and guide conversation to further develop thinking around particular topics. Online learners will gain free access to revision webinars as part of their course and all Astutis delegates will be assigned a tutor on enrolment who will be on hand to answer questions on a one-to-one basis via telephone or email.

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