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NEBOSH International Diploma in Occupational Health and Safety

NEBOSH International Diploma in Occupational Health and Safety

NEBOSH International Diploma in Occupational Health and Safety (IDip)

is the leading qualification for international health and safety practitioners.


New 2015 Specification Courses NOW Available - make sure you start the New Syllabus course.

The NEBOSH Diploma builds on the knowledge gained at Certificate level; it is designed for those seeking a successful long-term career as a health and safety professional.

Benefits of holding the NEBOSH Diploma include:

  • Allows you to use the letters 'IDipNEBOSH' after your name
  • Entitlement to graduate membership of IOSH (GradIOSH), the first step to becoming a Chartered Health and Safety Practitioner
  • Entitlement to full membership (MIIRSM) of the International Institute of Risk and Safety Management (IIRSM)
  • Meets the entry requirements for many safety related Masters programmes offered by UK universities

Click here to find out how the changes to the NEBOSH Diploma Syllabus affect you.


    Flexible online NEBOSH International Diploma course, available 24/7 worldwide. Around 470 hours of study (12-36 Months) + exams

    • Interactive online study
    • Fully supported by a team of expert tutors
    • Full PDF copy of the RRC study text to download
    • Worldwide exam centres

    Top quality NEBOSH Diploma course delivered over 6 weeks (30 days) + exams by RRC's expert trainers.

    • Block Release - Bahrain & Dubai
    • Day Release - Bahrain

    Highly effective NEBOSH International Diploma course, combining classroom teaching (3 x 5-day workshops, one week for Units IA, IB, IC) and e-Learning (300 hours private study).

    • Workshops available in Bahrain & Dubai

    NEBOSH Diploma training available worldwide.
    Classroom training, e-Learning or Blended Learning.

    • Delivered by experienced tutors
    • Delivered to meet your organisational needs



    Essential support for successful exam preparation

    • Revision Guide - concise guide to key topics and how to answer exam questions. Printed or digital (PDF)

    High quality, full colour NEBOSH Diploma textbooks.

    • Essential study guide, covering the complete NEBOSH Syllabus
    • Available for Units IA, IB & IC

NEBOSH International Diploma

builds on the knowledge gained at NEBOSH Certificate level. It is made up of four units which must be completed within five years:


NEW 2015 Specification Syllabus

  • Unit IA: International Management of Health and Safety - 154 Hours

    • IA1 - Principles of Health and Safety Management 
    • IA2 - Regulating Health and Safety 
    • IA3 - Loss Causation and Incident Investigation 
    • IA4 - Measuring and Reviewing Health and Safety Performance 
    • IA5 - The Assessment and Evaluation of Risk 
    • IA6 - Risk Control 
    • IA7 - Organisational Factors 
    • IA8 - Human Factors 
    • IA9 - The Role of the Health and Safety Practitioner

Assessed by a three hour written exam

  • Unit IB: International Control of Hazardous Agents in the Workplace - 115 Hours

    • IB1 - Managing Occupational Health  
    • IB2 - Identification, Assessment and Evaluation of Hazardous Substances  
    • IB3 - The Control of Hazardous Substances  
    • IB4 - The Monitoring and Measuring of Hazardous Substances  
    • IB5 - Biological Agents 
    • IB6 - Noise and Vibration  
    • IB7 - Radiation  
    • IB8 - Mental Ill-Health and Dealing with Violence and Aggression at Work  
    • IB9 - Musculoskeletal Risks and Controls  
    • IB10 - Work Environment Risks and Controls

Assessed by a three hour written exam

  • Unit IC: International Workplace and Work Equipment Safety - 120 Hours

    • IC1 - Workplace Welfare Requirements and Specific Workplace Issues 
    • IC2 - Fire and Explosion 
    • IC3 - Workplace Fire Risk Assessment 
    • IC4 - The Storage, Handling and Processing of Dangerous Substances 
    • IC5 - Work Equipment
    • IC6 - Workplace Machinery 
    • IC7 - Mobile, Lifting, Access and Work at Height Equipment 
    • IC8 - Electrical Safety 
    • IC9 - Construction and Works of a Temporary Nature - Hazards and Controls 
    • IC10 - Workplace Transport and Managing Work-Related Road Risk

Assessed by a three hour written exam

  • Unit ID: International Application of Health and Safety, Theory and Practice

Pending information from NEBOSH

Previous Syllabus 

  • Unit IA: International Management of Health and Safety - 189 Hours

    • Principles of Health and Safety Management
    • Loss Causation and Incident Investigation
    • Measuring and Reviewing Health and Safety Performance
    • Identifying Hazards, Assessing and Evaluating Risks
    • Risk Control
    • Organisational Factors
    • Human Factors
    • Regulating Health and Safety

Assessed by a three hour written exam

  • Unit IB: International Control of Hazardous Agents in the Workplace - 115 Hours

    • Principles of Chemical Control, Toxicology and Epidemiology
    • Hazardous Substances Assessment of Risk; Engineering Controls and Personal Protective Equipment
    • Monitoring and Measuring
    • Biological Agents
    • Noise and Vibration; Radiation
    • Psychosocial Agents
    • Musculoskeletal Risks and Controls
    • Work Environment Risks and Controls
    • Managing Occupational Health

Assessed by a three hour written exam

  • Unit IC: International Workplace and Work Equipment Safety - 115 Hours

    • General Workplace Issues
    • Principles of Fire and Explosion
    • Workplace Fire Risk Assessment
    • Storage, Handling and Processing of Dangerous Substances
    • Work Equipment – General; Workplace Machinery; Mobile, Lifting and Access
    • Electrical Safety
    • Construction Hazards and Controls
    • Workplace Transport and Driving for Work
    • Pressure System Hazards and Controls

Assessed by a three hour written exam

  • Unit ID: International Application of Health and Safety, Theory and Practice - 56 Hours

Assessed by an 8,000 word work based project


NEBOSH International Diploma

builds on knowledge that is gained from studying a NEBOSH Certificate, or similar course, and it is highly recommended that such a qualification is gained before starting the

NEBOSH Diploma


For details on the knowledge required prior to starting the NEBOSH Diploma see our Guidance on Direct Entry to the NEBOSH Diploma.

Units IA, IB and IC of the

NEBOSH International Diploma

are each assessed by a three-hour written examination. Unit D is assessed by an 8,000 word work based project.
  • RRC offer over 190 exam venues worldwide
  • Exams are held January and July each year
Transitional Arrangements – Key dates
  • September 2016 – All course providers should begin teaching the new syllabi.
  • October/November 2016 - Students who are currently enrolled on the current syllabus and have not yet completed all units will be automatically transferred to the new syllabi. The marks for any passes achieved up to that point (A/IA, B/IB, C/IC, D/ID), will be transferred over to the new syllabi.  Marks achieved will count towards the new syllabi Diplomas for five years after they were achieved.
  • January and July 2017 examinations – Only content common to both the current and new syllabi will be examined.
  • February 2017 – First submission date for the new Unit DNI assessment (this is now a common unit for both National & International Diploma’s).
  • November 2017 – The last submission date for the existing Unit D/ID assessment.
  • January 2018 examinations onwards – Only content that features in the new syllabi will be examined.
  • August 2018 – Last resubmission date for existing Unit D/ID assessment.

RRC are experts in the design and delivery of health and safety training throughout the world. Over our 85 year history, a million students and thousands of businesses have chosen RRC as their preferred training provider. Our expert trainers and friendly support teams inspire total confidence in the individuals and companies we train and advise.

Quality Training from the Experts

Training is all about quality and this starts with our trainers. It has taken many years to build RRC’s team of expert trainers and we are proud to have the best international team of HSE trainers there is. This team is at the heart of everything we do; developing and updating our course content, delivering and assessing our courses, supporting our students, consulting and always making sure we are firmly focused on our customers’ needs.

The team is a highly effective mix of academics, practitioners and consultants with a wide range of experience across all sectors. It is led by two RRC Directors, both HSE practitioners in their own right:

  • Dr David Towlson PhD, BSc (Hons), Cert Ed (PCET), CMIOSH, AIEMA - RRC Director of Training and Quality
  • Hasan Alaradi MSc, RMST, DipSM, CMIOSH, MIIRSM - Managing Director RRC Middle East Operations

Excellence in Customer Service

Providing a good service is really important to RRC,as there is no point in having great trainers without excellent customer service. Whether you are enquiring about a course, registering for your exam or visiting any one of our training centres, you can be sure you will receive the very best customer service.

Commitment to Quality

RRC’s reputation has been built on quality and over our 85 year history; many hundreds of thousands of happy customers have enjoyed success in their qualifications and careers through studying with RRC. We work closely with the awarding and industry bodies to ensure our courses are fully up-to-date and aligned with the latest syllabus revisions, legislation changes and exam procedures. Our ISO 9001 accreditation demonstrates our commitment to continual improvement.

Great Results

RRC have an exceptional track record. The clear, engaging and interactive courses we deliver guarantee our students receive the best possible training and ensure they get a full understanding of both the subject matter and how the assessment works. This not only leads to exam success, but also develops the understanding and competency they will need to apply their knowledge in the workplace.

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