COSHH Ireland and the Irish chemical assessment requirements
COSHH does not apply in the Republic of Ireland. Learn which Irish chemical rules apply, what assessments cover and which HSA Code of Practice to use.
COSHH in Ireland depends on location: the Regulations do not apply in the Republic of Ireland. Irish workplaces follow the Chemical Agents Regulations 2001 to 2026; Northern Ireland has its own COSHH Regulations. See the HSA's Irish legislation guidance and Northern Ireland's instrument.
This affects the assessment you use. The HSA warns that UK COSHH assessments do not meet Irish legal requirements. A familiar form or course title cannot replace an assessment against the applicable Irish duties. Start with the HSA's chemical risk-assessment guidance, rather than assuming a UK document will transfer unchanged.
What does COSHH stand for?
COSHH means Control of Substances Hazardous to Health, as explained by the UK Health and Safety Executive. It is a familiar term for workplace chemical safety, but the legislation depends on the workplace's location.
| Workplace location | Relevant legislation |
|---|---|
| Republic of Ireland | Safety, Health and Welfare at Work (Chemical Agents) Regulations 2001 to 2026 |
| Great Britain | Control of Substances Hazardous to Health Regulations 2002 |
| Northern Ireland | Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 |
The instruments are identified in the Irish 2026 amendment, Great Britain regulation 1 and Northern Ireland regulation 1. These are separate regimes, not interchangeable names for one law.
Which Irish chemical rules apply now?
The Irish framework starts with S.I. 619/2001. Amendments followed in 2015, 2021 and 2026. The latest amendment took effect on 9 April 2026 and confirms the collective citation “Chemical Agents Regulations 2001 to 2026”.
These duties extend beyond chemical manufacturers. They apply where hazardous chemical agents are, or may be, present at work. The HSA includes workplaces using cleaning products and those generating welding fumes in its legislation guidance.
The definition also extends beyond products with a particular hazard label. It includes agents posing risks through their properties and workplace presence or use, including agents assigned an occupational exposure limit value. See the 2015 amendment.
Use the current HSA Code of Practice
The HSA identifies its 2026 Chemical Agents & Carcinogens, Mutagens and Reprotoxic Substances Code of Practice as effective from 9 April 2026. It replaces the 2024 edition. Its schedules cover exposure limits, substances under review, specified substances and processes, and health surveillance or biological limits. Use the HSA's current Code page.
Edition matters. The 2026 amendment refers to the latest published Code and removes the original 2001 Schedules 1 and 2. Do not take old lead limits from those schedules. Check the relevant current Code entry and its status: advisory limits and substances under review are not all binding limits.
What must an Irish chemical risk assessment cover?
Assess the activity, not just the container. The HSA's assessment guidance calls for an activity-based approach. A safety data sheet supplies hazard information, but cannot assess the conditions of a particular task.
Use these checks when preparing or reviewing the written assessment:
- Identify hazardous agents and their hazardous properties, including agents generated by the work.
- Obtain supplier safety information, including the relevant REACH safety data sheet and further information reasonably required.
- Assess the level, type and duration of exposure. Consider exposure routes, frequency and people affected, including vulnerable workers.
- Describe working conditions and the quantities stored and used.
- Check applicable occupational exposure and biological limit values.
- Assess whether existing preventive measures work and identify further controls needed.
- Consider available conclusions from previous health surveillance.
- Include maintenance and accidental releases where significant exposure is foreseeable.
These checks follow regulation 4 of the principal instrument, the 2015 changes, the 2026 supplier-information amendment and the HSA's practical guidance.
Where several agents are involved, assess their combined risks. Record the assessment in writing, including measures already taken and those still needed. For a new activity, complete the assessment and preventive measures before work starts. These requirements appear in principal regulation 4.
When should the assessment be reviewed?
Review it regularly, and immediately when the specified triggers arise. These include doubts about validity, significant changes, relevant health-surveillance results and monitoring that shows an exposure-limit exceedance. See regulation 4(5).
The HSA recommends review at least annually. That is guidance, not the precise statutory interval. A yearly diary reminder does not remove the need for an earlier review when conditions change.
Controls, exposure monitoring and health surveillance
The control hierarchy starts with elimination or substitution where possible. Engineering and process controls, including extraction at source, address exposure before reliance on individual protection. PPE deals with remaining exposure and must be properly maintained and used. These duties sit in principal regulations 5 and 6.
Small quantities do not remove the need for an assessment. Regulation 5(2) disapplies certain duties only where the assessment demonstrates minimal risk because of the quantities present. It is not a blanket exemption from assessment, prevention or training.
Air sampling is not automatic for every assessment. Regulation 6 requires regular exposure measurement, and measurement after relevant changes, unless adequate prevention and protection can be demonstrated. Applicable Code exposure limits must not be exceeded. An exceedance requires immediate remedial action, and relevant exposure records must be kept. Check regulation 6 alongside the current HSA Code.
Health surveillance is conditional, rather than routine medical testing for everyone using chemicals. Regulation 10 links its appropriateness to identifiable effects, their likelihood under working conditions and valid, low-risk detection methods. The 2026 amendment makes surveillance mandatory where the Code lists a biological limit value for the hazardous agent. Relevant workers must be informed before assignment to the exposure-risk task. Read this with principal regulation 10.
Checking an existing “COSHH assessment” for Irish use
If an existing document carries a COSHH title, check its content against Irish requirements before using it. Changing the heading alone does not meet Irish assessment duties. Use its activity-based assessment guidance to check the scope.
Compare each recorded task with the work actually assessed. Does the document cover maintenance staff and foreseeable accidental releases? Does it assess combined risks where several agents are involved? Does it record the controls still needed, rather than simply listing the products used? These are checks against regulation 4, not requirements for a particular template.
Then check the references. An assessment citing only the original 2001 schedules or the 2024 Code needs attention to those references. The 2026 amendment removed those schedules, and the HSA's Code page identifies the replacement edition. Check the current Irish entry for each relevant exposure limit instead of carrying over a UK value. Check whether changes have triggered an immediate review.
Training, symbols and “COSHH certificates”
Irish duties include appropriate information and training, safety data sheet access, relevant identification and labelling, consultation, and accident or emergency arrangements. These appear in principal regulations 8 and 9, with the SDS-access reference updated by the 2015 amendment. They do not establish a universal annual “COSHH certificate” requirement.
Likewise, avoid treating “COSHH symbols” as a separate Irish classification system. The Irish hazardous-agent definition refers to relevant CLP physical and health hazards. Labels help identify hazards; the assessment must still address the actual work and exposure. See the 2015 definition and HSA assessment guidance.
RegAffairs AI answers whether COSHH applies in Ireland.