CDM/General/TBT-CDM-001

CDM 2015 Awareness

CDM & Legal Framework › General › CDM 2015 Awareness

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The Construction (Design and Management) Regulations 2015 are the main health and safety regulations for construction.
CDM 2015 places duties on clients, designers, principal designers, principal contractors, contractors, and workers.
Workers have a duty to cooperate with their employer, follow site rules, and report hazards or unsafe conditions.
The Construction Phase Plan sets out the health and safety arrangements for the project and must be in place before work starts.
Pre-construction information about site hazards must be provided to contractors before they begin work.
A principal designer must be appointed on all projects with more than one contractor to coordinate health and safety in design.
A principal contractor must be appointed to manage health and safety during the construction phase on multi-contractor sites.
The Health and Safety File is a record of information for future maintenance and must be updated throughout the project.
F10 notification to the HSE is required for projects lasting more than 30 working days with more than 20 workers.
Everyone on site has duties under CDM — it is not just a management responsibility but applies to every worker.

Your legal duties	CDM 2015 places specific duties on workers including cooperation, following instructions, and reporting dangers — ignorance is no defence.
Safer by design	CDM requires designers to eliminate hazards at the design stage, reducing risk before construction even begins.
Coordinated safety	Appointing principal designers and principal contractors ensures safety is coordinated across all trades and phases of work.

Don't

Cooperate with your employer and follow site rules, method statements, and instructions.
Report any hazards, unsafe conditions, or concerns to your supervisor promptly.
Attend site inductions, toolbox talks, and safety briefings as required.
Follow the Construction Phase Plan arrangements for health and safety on your project.
Use equipment, materials, and substances in accordance with training and instructions.
Participate in consultations about health and safety matters that affect your work.
Ensure you have the correct competency cards and training for your role.
Provide information about hazards you encounter for inclusion in the Health and Safety File.
Work within the safe systems of work established by your contractor.
Take reasonable care of your own health and safety and that of others on site.

DON'T ignore site rules — they are legal requirements under CDM 2015, not suggestions.
DON'T fail to report hazards — you have a legal duty to raise safety concerns.
DON'T skip inductions or toolbox talks — they communicate essential safety information.
DON'T work outside the arrangements set out in the Construction Phase Plan.
DON'T misuse equipment or substances in ways you have not been trained for.
DON'T refuse to engage in health and safety consultations about your work activities.
DON'T work without the required competency cards or training for your trade.
DON'T assume safety is someone else's problem — CDM duties apply to every worker.
DON'T deviate from the agreed safe system of work without authorisation.
DON'T put yourself or others at unnecessary risk through careless or reckless behaviour.

See also: Worker Duties Under CDM | Construction Phase Plan Awareness

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