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2026 Statistics
Key Facts: NEBOSH IDip Exam
RQF Level 6
Qualification Level
NEBOSH / Ofqual
42 credits
Credit Value
NEBOSH
3 units
DI1, DI2 and DI3
NEBOSH 2023 specification
650 marks
Total Across Units
NEBOSH (DI1 300, DI2 175, DI3 175)
50%
Pass Mark Per Unit
NEBOSH
150-195
Overall Pass Band
NEBOSH grading
ILO-OSH 2001
Management-System Basis
International Labour Organization
The NEBOSH International Diploma (IDipNEBOSH) is a degree-level RQF Level 6, 42-credit qualification for aspiring senior OSH professionals, and the international version of the National Diploma using ILO law instead of UK statute. Its three units are DI1 Workplace health and safety principles (a practical assignment covering ILO conventions C155/C161/C187, ILO-OSH 2001, ISO 45001, safety culture, human factors, risk-management techniques and contractor management), DI2 Controlling workplace health issues (a case study on occupational health, toxicology, hazardous substances, noise, vibration, radiation, musculoskeletal disorders and mental health) and DI3 Controlling workplace safety issues (a case study on fire and explosion, work equipment and machinery, electricity, confined spaces, construction and workplace transport). Each unit is marked from 650 total marks (DI1 300, DI2 175, DI3 175) and needs 50% to pass; the combined mark sets Pass (150-195), Credit (196-225) or Distinction (226+). The current specification launched in July 2023, and English at IELTS 7.0 level is recommended.
Sample NEBOSH IDip Practice Questions
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1An employer adopts the ILO-OSH 2001 guidelines to structure its safety management system. According to those guidelines, which sequence correctly lists the five main elements of the system at organisational level?
A.Policy; organising; planning and implementation; evaluation; action for improvement
B.Hazard identification; risk assessment; control; review; certification
C.Plan; do; check; act; audit
D.Leadership; commitment; competence; communication; consultation
Explanation: ILO-OSH 2001 sets out five interrelated elements at organisational level: Policy, Organising, Planning and implementation, Evaluation, and Action for improvement, operating in a continual-improvement (Plan-Do-Check-Act style) cycle.
2ILO Convention C155 (Occupational Safety and Health Convention, 1981) is a foundational instrument referenced throughout the International Diploma. What is its primary purpose?
A.To set a binding worldwide noise exposure limit of 85 dB(A)
B.To require ratifying states to formulate, implement and periodically review a coherent national OSH policy
C.To establish occupational health services in every workplace with more than 50 workers
D.To create an international certification scheme for safety practitioners
Explanation: C155 requires each ratifying member state to formulate, implement and periodically review a coherent national policy on occupational safety, health and the working environment, allocating duties to governments, employers and workers.
3An international organisation wants to certify its safety management system to a recognised standard. Which current standard should it select, and what key concept did it introduce compared with the standard it replaced?
A.OHSAS 18001, which first introduced worker consultation requirements
B.ISO 9001, which introduced the process approach to safety
C.ISO 45001, which embedded the organisational context and a stronger leadership/worker-participation focus using the Annex SL high-level structure
D.ISO 14001, which introduced the concept of significant aspects to safety
Explanation: ISO 45001:2018 replaced OHSAS 18001 and uses the Annex SL high-level structure, explicitly requiring understanding of organisational context, strong top-management leadership, and worker participation/consultation.
4Socio-legal models of health and safety regulation are studied in DI1. A 'goal-setting' (self-regulatory) regulatory approach differs from a 'prescriptive' approach mainly because it:
A.Specifies the exact technical control measures employers must install
B.Sets the standard of outcome to be achieved and leaves duty-holders to determine how to achieve it, often supported by guidance and codes of practice
C.Removes all employer duties and relies solely on workers protecting themselves
D.Applies only to the public sector and not to private companies
Explanation: Goal-setting/self-regulatory regimes (the Robens philosophy) set the required outcome or standard and rely on duty-holders to decide appropriate means, typically supported by approved codes of practice and guidance.
5ILO Convention C161 (Occupational Health Services Convention, 1985) requires the progressive development of occupational health services. These services are described in the Convention as essentially:
A.Enforcement bodies with powers to prosecute employers
B.Insurance schemes that pay compensation for industrial injury
C.Bodies that issue international competence certificates to doctors
D.Preventive functions advising the employer, workers and their representatives on maintaining a safe and healthy working environment
Explanation: C161 defines occupational health services as having an essentially preventive function, responsible for advising employers, workers and representatives on creating and maintaining a safe and healthy working environment and on adaptation of work to workers.
6ILO Convention C187 (Promotional Framework for Occupational Safety and Health Convention, 2006) is significant because it promotes which overarching concept for managing OSH at national level?
A.A zero-tolerance fines regime for all accidents
B.A national preventative safety and health culture and continuous improvement of the national OSH system
C.Mandatory privatisation of all enforcement functions
D.A single global occupational exposure limit list
Explanation: C187 promotes the development of a national preventative safety and health culture and the progressive achievement of a safe and healthy working environment through a national OSH system, programme and policy that are continually improved.
7In jurisdictions based on common-law tort, for a worker to succeed in a civil claim of negligence against an employer, the claimant must generally establish three things. These are:
A.Intent, recklessness and a criminal conviction
B.A written contract, a witness statement and a doctor's note
C.A breach of statutory duty, a prohibition notice and an insurance policy
D.A duty of care was owed, that duty was breached, and the breach caused foreseeable loss or harm
Explanation: Negligence requires the claimant to prove that a duty of care was owed, that the defendant breached that duty by failing to meet the reasonable standard, and that the breach caused reasonably foreseeable damage.
8The doctrine of vicarious liability is relevant to employer civil liability. It means that:
A.An employer can be held liable for the negligent acts of an employee committed in the course of employment
B.A worker is always personally liable and the employer is never responsible
C.Liability passes automatically to the insurer with no employer involvement
D.Only directors, never the organisation, can be held liable for harm
Explanation: Vicarious liability holds an employer responsible for the wrongful (negligent) acts or omissions of its employees committed in the course of their employment, even where the employer was not personally at fault.
9Many national enforcement systems give inspectors the power to issue notices. The key difference between a typical 'improvement notice' and a 'prohibition notice' is that a prohibition notice:
A.Gives the duty-holder time to remedy a contravention while work continues
B.Is used to stop an activity that involves a risk of serious personal injury, with effect immediately or after a stated time
C.Can only be issued by a court after a criminal trial
D.Imposes a fixed financial penalty but allows the activity to continue
Explanation: A prohibition notice halts an activity that the inspector believes involves a risk of serious personal injury; it can take immediate or deferred effect. An improvement notice, by contrast, allows time to remedy a contravention while work continues.
10DI1 considers the role of insurance companies as external influences on health and safety. The main way insurers drive improved OSH standards is by:
A.Acting as the legal enforcement authority that prosecutes employers
B.Providing free occupational health services to all insured workers
C.Writing national occupational safety legislation
D.Setting premiums and conditions linked to risk, and using surveys and claims experience to require improvements
Explanation: Insurers influence OSH by risk-rating premiums, attaching conditions and warranties, conducting risk surveys, and adjusting cover based on claims experience, creating a financial incentive for employers to manage risk.
About the NEBOSH IDip Practice Questions
Verified exam format metadata for NEBOSH Level 6 International Diploma for Occupational Health and Safety Management Professionals is pending. The practice questions above remain available while official exam length, timing, passing score, fee, and administrator details are reviewed.