How to Carry Out a Risk Assessment on an Irish Construction Site
A practical step-by-step guide to carrying out a legally compliant risk assessment on an Irish construction site.
Risk assessment is the foundation of construction safety management in Ireland. Every safety plan, every method statement, every set of site rules flows from a proper understanding of the risks involved in the work. Yet in practice, risk assessments on Irish construction sites are often done poorly: too generic, too brief, or prepared once and never revisited. In this guide, I will walk you through how to carry out a risk assessment on a construction site in Ireland, what the law requires, and what makes the difference between a risk assessment that actually protects workers and one that simply fills a folder. --- ## Why Risk Assessments Are a Legal Requirement Under Section 19 of the Safety, Health and Welfare at Work Act 2005, every employer in Ireland is required to identify the hazards in the workplace, assess the risks created by those hazards, and put in place appropriate control measures. This obligation applies to all employers, including construction companies of all sizes. The Safety, Health and Welfare at Work (Construction) Regulations 2013 add further requirements specific to construction projects, including the obligation on the PSCS to prepare a Construction Phase Plan that addresses the significant risks on the project. A risk assessment is not a one-off administrative task. It is a continuous process that must be reviewed whenever the work changes, when new risks emerge, or when an incident occurs that suggests the existing controls are not working. --- ## The Five Steps of a Construction Site Risk Assessment ### Step 1: Identify the Hazards The first step is to identify everything on the site that has the potential to cause harm. On a construction site, this is a substantial list. Common hazards include: - Working at height (roofs, scaffolding, leading edges, floor openings) - Excavation and groundworks (collapse, flooding, underground services) - Plant and machinery (excavators, dumpers, cranes, concrete mixers) - Manual handling (lifting, carrying, repetitive movements) - Hazardous substances (silica dust, cement, solvents, diesel fumes, asbestos) - Electrical hazards (overhead power lines, buried cables, temporary electrical installations) - Noise and vibration (power tools, compactors, breakers) - Fire and explosion - Slips, trips, and falls (uneven surfaces, wet conditions, poor housekeeping) - Structural instability (demolition, alteration of existing structures) - Confined spaces (manholes, tanks, trenches) The best way to identify hazards is to walk the site and observe the work being carried out. Speak to the workers who are doing the job. They often have the best understanding of where the risks lie. Also review accident and near-miss records from previous similar projects. These are a valuable source of information about hazards that may not be immediately obvious from a site walkthrough. ### Step 2: Decide Who Might Be Harmed and How For each hazard identified, consider who might be harmed and how. On a construction site, this includes: - Your own employees - Workers employed by subcontractors - Visitors to the site (clients, inspectors, delivery drivers) - Members of the public (particularly on sites in urban areas or near schools) The way in which harm might occur matters as much as who might be harmed. A fall from height might result in a fatality. Repeated exposure to silica dust might result in silicosis developing over years. Manual handling injuries might be cumulative. Understanding the mechanism of harm helps you choose the right control measures. ### Step 3: Evaluate the Risks and Decide on Precautions Once you have identified the hazards and who might be harmed, you need to evaluate the risks. Risk is a function of the likelihood that harm will occur and the severity of that harm if it does. A simple risk matrix is a useful tool for this evaluation. Rate the likelihood of harm (unlikely, possible, likely) and the severity of harm (minor, serious, fatal) and combine them to give an overall risk rating (low, medium, high). For high-risk activities, the control measures must be robust and specific. For lower-risk activities, simpler controls may be sufficient. When deciding on control measures, apply the hierarchy of controls: 1. **Elimination** -- remove the hazard entirely if possible 2. **Substitution** -- replace a hazardous material or process with a less hazardous one 3. **Engineering controls** -- use physical measures to reduce exposure (guarding, ventilation, edge protection) 4. **Administrative controls** -- change the way work is organised or carried out (permits to work, safe systems of work, training) 5. **Personal protective equipment** -- provide PPE as a last resort, not as a first response PPE is at the bottom of the hierarchy for a reason. It protects only the individual wearing it, it can fail, and it does nothing to address the underlying hazard. Collective protection measures (such as edge protection or ventilation) are always preferable. ### Step 4: Record Your Findings The risk assessment must be recorded in writing. For construction companies employing five or more workers, this is a legal requirement. For smaller companies, it is still strongly advisable. The written record should include: - The hazards identified - Who might be harmed and how - The control measures in place - The residual risk rating after controls are applied - The person responsible for implementing and monitoring the controls - The date of the assessment and the date of the next review The risk assessment should be specific to the work being carried out. A generic risk assessment that could apply to any construction site is not adequate. The HSA expects to see risk assessments that reflect the actual conditions and activities on your site. ### Step 5: Review and Update the Assessment A risk assessment is not a static document. It must be reviewed and updated whenever: - The work changes significantly - New hazards are introduced (new plant, new materials, new activities) - An accident, near miss, or dangerous occurrence suggests that the existing controls are not working - New information becomes available about a hazard (for example, new guidance on silica dust exposure limits) - The HSA or another enforcement authority identifies a deficiency As a minimum, risk assessments should be reviewed at the start of each new phase of work and at regular intervals throughout the project. --- ## Task-Specific Risk Assessments In addition to the general site risk assessment, task-specific risk assessments are required for high-risk activities. These are typically incorporated into Method Statements, which together form the Risk Assessment and Method Statement (RAMS) document. Task-specific risk assessments are required for activities such as: - Working at height (particularly on roofs or near unprotected edges) - Excavation work deeper than 1.25 metres - Lifting operations involving cranes or other lifting equipment - Demolition or structural alteration - Work involving hazardous substances - Confined space entry - Hot works (welding, cutting, grinding) The task-specific risk assessment should be prepared before the work starts and reviewed with the workers who will carry out the task. Workers should sign to confirm they have read and understood the risk assessment. --- ## What the HSA Expects to See HSA inspectors visiting construction sites in Leinster will typically ask to see risk assessments as part of their inspection. They will check: - That risk assessments have been carried out for the significant risks on the site - That the assessments are specific to the site and the work being carried out - That the control measures described in the assessments are actually in place - That workers are aware of the risk assessments relevant to their work - That the assessments have been reviewed and updated as the project has progressed A common finding during HSA inspections is that risk assessments exist on paper but are not reflected in what is actually happening on site. If the risk assessment says that edge protection will be in place at all leading edges but the inspector can see unprotected edges, the risk assessment is not doing its job. --- ## Frequently Asked Questions **Who is responsible for carrying out risk assessments on a construction site?** The employer is responsible for ensuring that risk assessments are carried out for the work their employees do. On a construction project with multiple contractors, each employer is responsible for the risks created by their own work activities. The PSCS has an additional responsibility to coordinate the management of risks across the project. **How often must risk assessments be reviewed?** There is no fixed review interval specified in Irish law. The obligation is to review the assessment whenever there is a significant change in the work, when an incident occurs, or when the assessment is no longer valid. As a practical matter, reviewing risk assessments at the start of each new phase of work and at least every three months on longer projects is good practice. **Can I use a generic risk assessment template?** A template can be a useful starting point, but it must be adapted to reflect the specific hazards and conditions on your site. A generic risk assessment that has not been tailored to the actual work is not legally compliant and will not protect your workers. **Do risk assessments need to be signed by workers?** There is no legal requirement for workers to sign risk assessments, but it is good practice to have workers sign to confirm they have read and understood the risk assessment for high-risk tasks. This provides evidence that the information has been communicated. **What is the difference between a risk assessment and a method statement?** A risk assessment identifies the hazards and evaluates the risks. A method statement describes how the work will be carried out safely. Together, they form a RAMS document. For high-risk construction activities, both are required. --- ## How Safety Check Can Help At Safety Check, we prepare site-specific risk assessments and RAMS documents for construction companies across Leinster. We work with your site management team to identify the actual hazards on your project and develop practical, workable control measures. We also provide training for site managers and supervisors on how to carry out effective risk assessments, so your team can manage this process independently on future projects. If you need help with risk assessments for a project in Dublin, Wicklow, Kildare, Meath, or anywhere else in Leinster, [contact us today](/contact). --- ## Related Articles - [How to Write a RAMS Document: A Practical Guide for Irish Contractors](/guides/how-to-write-rams) - [What to Expect During an HSA Site Inspection in Ireland](/guides/hsa-inspection) - [Construction Site Safety Inspection Guide](/guides/construction-site-safety-inspection-guide)