Online, Virtual and Classroom Courses
Fully Certified NEBOSH, IOSH, ISEP Accredited
7-Day Customer Service
Jason Mordecai

What to Expect From Your NEBOSH Diploma Exams: A 2024 Astutis Guide

If you're thinking about taking the NEBOSH Diploma but are worried about the exams, take a look at our blog. It tells you just what to expect.

January 2024

To achieve your full NEBOSH Level 6 Diploma in Occupational Health and Safety Management Professionals qualification, you will need to complete, submit and pass three online digital assessments.  Don't worry - you'll get lots of assessment preparation and support throughout your course, and here we've gone through everything you need to know about the NEBOSH Diploma assessments so you know just what to expect. 

What Assessments are Included in the NEBOSH Diploma?

The NEBOSH Diploma digital assessment is an assessment that needs to be downloaded, completed and submitted on the NEBOSH online assessment platform within a specified time period.

Digital assessments have been introduced for the following units:

a. NEBOSH National Diploma for Occupational Health and Safety Management Professionals


  • Unit DN1
  • Unit DN2
  • Unit DN3

b. NEBOSH International Diploma for Occupational Health and Safety Management Professionals


  • Unit DI1
  • Unit DI2
  • Unit DI3


Sitting Your NEBOSH Diploma Exams: Assessment Units

To sit a NEBOSH Diploma digital assessment, you must register with your Learning Partner for a specific sitting. Astutis have a dedicated NEBOSH exam team and will be with you every step of the way with information on what happens next and the registration process.  


Unit DN1/DI1 NEBOSH Diploma Assessment Timeframe


The assessment is split into 4 parts. All the tasks and activities in all parts are mandatory.

  • Part 1: Contains questions based on a fictitious, but realistic scenario.
  • Part 2: Contains tasks that you will need to complete in a suitable workspace.
  • Part 3: Contains reflective tasks.
  • Part 4: Is a short research project.

You will have 6 weeks (30 working days) to complete all four parts of the assessment. The assessment is not invigilated, and you are free to use any learning resources to which you have access, e.g. your Astutis course notes, or helpful websites such as the HSE website.

Prior to the May 2023 Syllabus change the equivalent units were named ND1/ID1. To discover more about ND1/ID1, read our blog here.

For the latest unit guidance, following the May 2023 syllabus update, visit our blog here.


Unit ND2/ID2 and Unit ND3/ID3 Assessments Timeframe


Units DN2/DN2 and DN3/DI3 are each assessed with a case-study and scenario based questions. 

You will have 4 weeks to complete each question paper and submit it for marking. We recommend you spend at least 40 hours on each paper (around 10 hours per week).


What Marks Do I Need to Pass my NEBOSH Diploma?

The NEBOSH Diploma for Occupational Health and Safety Professionals has 3 assessments (previously called exams):

Unit DN1/DI1:

The assessment for Unit DN1/DI1 is split into 4 sections:

  • Scenario based questions (150 marks)
  • Workplace activities (150 marks)
  • Reflective tasks (100 marks)
  • A short research project (150 marks)

You will have 6 weeks to complete your assignment and submit it to the NEBOSH online portal. We recommend you spend at least 60 hours on your assessment, which equates to around 10 hours per week.

The assessment is worth 550 marks and you need to achieve at least 50% to pass. 

Unit DN2/DI2 and Unit DN3/DI3:

Units DN2/DI2 and DN3/DI3 are each assessed with a case-study and scenario based questions.

You will have 4 weeks to complete each question paper and submit it for marking. We recommend you spend at least 40 hours on each paper (around 10 hours per week).


NEBOSH Diploma Exam Dates Availability 

The following unit assessments DN1/DI1, DN2/DI2, DN3/DI3 are online open book assessments.

Please click here to see all the latest upcoming dates in our Exam Hub.


Register For Your NEBOSH Diploma Exam

Once you’ve chosen your exam or submission date, you’ll need to let your learning provider know in plenty of time so that they register you with NEBOSH. You’re usually required to give 8 weeks' notice, but it’s always a good idea to check these fine details at the time you book your course. It is not possible to register directly with NEBOSH.


When Will I Receive my NEBOSH Diploma Exam Results?

Results will be issued 50 working days from the assessment submission date and will be sent to the email address registered to your learner record.

Please add info@nebosh.org.uk to your safe-senders list to help your results email reach you. This is particularly important for gmail.com and googlemail.com email addresses as these have previously had problems with rejected emails.

Results are sent out via email directly from NEBOSH in the days leading up to results day. This means that some people may receive theirs early, but everyone will still receive their result on or before results day as planned. The time you receive your result is not a reflection of a pass or refer mark, so please do not worry that you have been referred if you receive your result later than a friend or classmate.  

We recommend that you keep a copy of your original submission until your results are declared should there be any technical difficulties.

Related Blogs

  • The Astutis Guide: The NEBOSH Examination Process Image
    Toby Howell AISEP, BA PGDip

    The Astutis Guide: The NEBOSH Examination Process

    Enrolled into a NEBOSH course and unaware of how their examination process goes? Or are you thinking about sitting a NEBOSH course and just want to understand the process before committing? If the answer to either question is yes, this is the blog for you. We answer the most important questions regarding NEBOSH exams. Read more here. 
    04.01.23
Section Curve
Case Studies

Real Life Stories

Find out how learners look back on their training with Astutis. Our case studies give our learners, both individual and corporate, a platform to share their Astutis experience. Discover how training with Astutis has helped past learners and delegates make the world a safer place, one course at a time.
More Image
Bottom Curve
What People Say

Hear What Our Learners Have To Say

We're always there for our customers. 98% of our learners rated their overall experience as good or outstanding. We will always pride ourselves on our customer service. But don’t take our word for it, here is what our customers have to say
  • "Excellent support received from all team. Thank you very much"

    Umer
    26.11.2025
  • "Great learning experience"

    Umer
    26.11.2025
  • "Great resources for the course, great communication from Astutis regarding resits etc. I enjoyed the webinars."

    19.11.2025
  • "The course was fantastic - the course content along with the resources and webinars provided by Astutis gave me really great support throughout."

    19.11.2025
  • "Very well delivered course. The trainer was very knowledgeable and created a very relaxed but informative training session. The course handouts were of very good quality."

    Richard
    18.11.2025
  • "The course delivered exactly what it was supposed to. The trainer was very approachable and created a relaxed and informative learning environment."

    Richard
    18.11.2025
  • "trainer was very knowledgable answered questions with ease"

    Gary
    18.11.2025
  • "i was very impressed with instructors knowledge."

    Gary
    18.11.2025
  • "Great on line platform - easy to understand and good pace. The end test - you really had to think about - it’s tested knowledge - great option for learning CDM"

    Neil
    12.11.2025
  • "Great on line platform and great pace for learning"

    Neil
    12.11.2025