Safe Systems of Work (SSoW): The Foundation of Safe Working
What they are, why they matter, and how to create one
A Safe System of Work (SSoW) is a formal, step-by-step method for carrying out a task safely. It combines your risk assessment findings with clear instructions, controls and responsibilities, ensuring work is performed consistently and without unnecessary risk.
What a Safe System of Work includes
A strong SSoW typically covers:
- The task — what needs to be done
- Identified hazards — from the task or environment
- Required controls — PPE, supervision, guarding, isolation, sequencing
- Step-by-step safe working procedure
- Competence requirements — trained, authorised personnel only
- Emergency arrangements
It may be supported by method statements, permits to work, toolbox talks or equipment manuals.
When you need an SSoW
Safe Systems of Work are required when:
- The task involves significant hazards
- Machinery, vehicles or high-risk equipment are used
- Work requires a defined sequence (e.g., isolations, lifting operations)
- Contractors are working on site
- Workers are unfamiliar with the task
SSoWs are common across construction, engineering, manufacturing, warehousing and maintenance activities.
Why Safe Systems of Work improve safety
- Prevents injuries through predictable, controlled steps
- Ensures workers know exactly how to perform tasks safely
- Reduces variation and human error
- Supports legal compliance under the Health and Safety at Work Act
- Helps demonstrate due diligence during audits and investigations
Clear, well-written SSoWs protect people, reduce downtime and create a strong safety culture.
Method Statement Template (Docuqo 0101)
If you need a clear, professional document for outlining safe working procedures, you can download our UK Method Statement Template here:
Method Statement Template – Docuqo 0101
This template is ideal for defining task steps, controls, responsibilities and safety measures — and is commonly used as part of a Safe System of Work.
