The short answer: neither Irish nor UK law gives a DSE assessment an expiry date. There is no legal "every year" or "every two years" rule.
What the law does require is that the assessment is repeated whenever something changes: a new or moved workstation, new equipment or technology, a change in who uses the workstation or how it is used, or any reason to believe the original is out of date. Many employers add a routine check every 12 to 24 months as company policy. That is sensible good practice, but it is not a legal minimum.
Search for this question and you will find guidance saying "annually", guidance saying "every two years" and guidance saying "there is no set period". They are not contradicting each other as much as they appear to. They are mixing up three different things: what the regulations require, what regulators recommend, and what individual employers choose to write into their own policies. This guide separates the three so you can build a review cycle you can justify to an inspector, an auditor or your own board.
What the law says about repeating a DSE assessment
Ireland
In Ireland, display screen equipment is covered by Chapter 5 of Part 2 of the Safety, Health and Welfare at Work (General Application) Regulations 2007 (S.I. No. 299 of 2007), supported by Schedule 4 and the Health and Safety Authority's guide to the DSE regulations. They apply to employees who habitually use display screen equipment as a significant part of their normal work.
Regulation 72(1)(b) requires the employer to analyse each workstation for risks to eyesight, physical problems and mental stress. Regulation 72(1)(f) then requires a further analysis in two situations: when an employee moves to a new workstation, and when significant new work equipment, a change of equipment or new technology is introduced at that person's workstation. The regulations do not set a number of years between assessments.
The wider Safety, Health and Welfare at Work Act 2005 also matters. Section 19(3) requires an employer to review a risk assessment where there has been a significant change in what it covers, or where there is another reason to think it is no longer valid. A DSE assessment is a risk assessment, so that duty sits alongside the specific DSE rules.
United Kingdom
In Great Britain, the Health and Safety (Display Screen Equipment) Regulations 1992 (as amended) require a suitable and sufficient analysis of workstations. Regulation 2(2) says the assessment must be reviewed where there is reason to suspect it is no longer valid, or where there has been a significant change in the matters it relates to. If the review shows changes are needed, the employer must make them.
The Health and Safety Executive applies this to workers who use DSE daily, for an hour or more at a time. It points to four situations that call for an assessment: a new workstation is set up, a new user starts at a workstation, a workstation or the way it is used changes, or a user reports pain or discomfort. Its guidance does not set a fixed review interval either. Northern Ireland has its own equivalent regulations, overseen by HSENI, so check the local rules if you operate there.
The European baseline
Both countries' rules trace back to Council Directive 90/270/EEC. It requires employers to analyse workstations, to train workers whenever the organisation of the workstation is substantially modified, and to offer eye and eyesight tests before display screen work starts, at regular intervals afterwards, and when visual difficulties arise. Like the national laws built on it, it works on a trigger basis rather than a fixed calendar.
| Jurisdiction | Fixed repeat interval? | What triggers a repeat | Where to check |
|---|---|---|---|
| Ireland | No | Employee moves workstation; significant new or changed equipment or technology (Reg 72(1)(f)); significant change or reason to doubt validity (s.19(3), 2005 Act) | HSA DSE FAQs |
| Great Britain | No | Reason to suspect the assessment is no longer valid, or a significant change (Reg 2(2)); HSE also lists new workstation, new user, changes in use and reported discomfort | HSE workstation guidance |
| EU baseline | No | Workstation analysis duty; training when the workstation is substantially modified; eye tests at regular intervals | EUR-Lex summary |
| Everywhere else | Varies | Depends on national or regional law. See the section on other countries below. | Your own workplace safety regulator |
The events that should trigger a fresh assessment
Because the law is event-driven, the most useful thing an employer can do is make sure those events are actually noticed. Most overdue assessments are not forgotten on a calendar. They are missed because nobody told the person responsible that something had changed.
| Trigger | Why it matters | Typical response |
|---|---|---|
| New starter or new user of a workstation | A setup that suited the previous person rarely suits the next one | Full assessment, ideally in the first week |
| Employee moves desk, floor or building | Named directly in Irish regulations and in HSE guidance | Full assessment at the new workstation |
| New or changed equipment (chair, monitor, laptop, docking station, sit-stand desk) | Height, reach and screen position all change | Full or targeted review, depending on scale |
| New technology or software that changes how the job is done | Can change screen time, posture and task pattern | Review the affected workstations |
| Change of role or task mix | More screen time or more intensive keying raises exposure | Review, and confirm the person is still a habitual user |
| Office layout, lighting or glare changes | Environmental factors are part of the analysis | Review the affected area |
| Reported pain, discomfort or visual difficulty | A direct signal that the existing assessment may not be working | Prompt reassessment, with eye test access where relevant |
| Actions from the last assessment still open | An assessment that identified risks but changed nothing has not controlled them | Close out the actions, then confirm |
| Change in where or how someone works (for example moving to hybrid) | A new habitual workstation needs its own analysis | Assess the new workstation |
Which assessment fits the trigger?
Once you know why a reassessment is due, the next question is which type suits the situation. Hover over or tap a card to see where each one fits.
-
Remote Ergonomic
Click for info
DSE AssessmentsNew home setup or hybrid moveRemote Ergonomic DSE Assessments
Flexible sessions for home, remote and hybrid teams when a desk, laptop or working pattern changes.
Learn More -
In-Person Ergonomic
Click for info
DSE AssessmentsOffice move or new equipmentIn-Person Ergonomic DSE Assessments
Tailored onsite sessions for new starters, desk moves, refits and equipment changes.
Learn More -
Detailed Ergonomic
Click for info
DSE AssessmentsReported discomfort or specific needsDetailed Ergonomic DSE Assessments
Personalised evaluations when an employee reports symptoms or has medical or pregnancy-related needs.
Learn More -
Workplace Ergonomic
Click for info
Needs AssessmentsNeeds have changedWorkplace Ergonomic Needs Assessments
In-depth assessments when someone's needs have changed, such as returning to work after illness or injury.
Learn More
Where "every year" and "every two years" come from
You will often see a review cycle of 12 months or 24 months quoted as if it were a rule. It is not a statutory requirement in Ireland or the UK. These intervals are policy choices, usually adopted for three reasons: they give a defensible audit trail, they catch gradual drift (people slowly return to poor habits, equipment wears), and they pick up changes that nobody reported.
If you set an interval, document it as your organisation's own standard. Do not describe it as a legal or regulator-set requirement, because that is easy to get wrong in an audit or an incident investigation. A risk-based approach is usually more defensible than one blanket date:
| Situation | Suggested review approach (good practice, not law) |
|---|---|
| New starters | Assess at or very soon after the start date |
| Any trigger event above | Reassess promptly and in proportion to the change |
| Reported symptoms or visual difficulty | Treat as priority and reassess quickly |
| Higher-risk users (long screen hours, past issues, shared or hot desks) | Routine check at around 12 months |
| Stable, low-risk users with no changes | Confirmation review at around 12 to 24 months, such as a refreshed self-check reviewed by a competent person |
Hybrid and home workers
The triggers are the same wherever the screen is. If someone habitually works from home, that home workstation is a workstation in its own right, and a new desk, laptop, monitor or move of house is a trigger in the same way a change in the office would be. If someone splits their week between locations, each habitual workstation needs to be covered. For how the home-based side of this works in practice, see our guide to remote ergonomic assessments.
Other countries: check your national rules
This is where the answer genuinely depends on where you work. Not every country has a dedicated display screen law. Some rely on general duties to manage workplace risk, some use codes of practice or standards, and in federal systems the rules can differ by state or province. Always confirm the position with your own regulator before setting a policy.
| Region | What to know | Start here |
|---|---|---|
| United States | OSHA states it has no specific standard for computer workstations, but offers an ergonomics eTool. State plans can differ. | OSHA computer workstations |
| Canada | Rules vary by province and territory. CCOHS publishes office ergonomics guidance, and CSA Z412 covers office ergonomics. | CCOHS office ergonomics |
| Australia | Work health and safety laws apply, supported by a model code on hazardous manual tasks. Check whether the code has legal effect in your state or territory. | Safe Work Australia |
| Any other country | Search for your national workplace safety authority and look for display screen, VDU or office ergonomics guidance. | Your national regulator |
Whatever the local rule, the safest working principle travels well: reassess when the person, the equipment, the task or the setting changes, and when someone reports a problem.
What a current DSE assessment record should show
If a regulator, insurer or auditor asks whether your assessments are up to date, the question is really whether you can evidence that. A defensible record normally shows:
- who was assessed, at which workstation and on what date;
- who carried out or reviewed the assessment, and their competence;
- the risks found, the actions agreed, the owner of each action and the date it was completed;
- the reason for any reassessment, such as a move, new equipment or a reported symptom;
- when the next review is due, and whether that date is a legal trigger or an internal policy interval.
The more that record is held in one place, the easier it is to spot who is overdue. This is why many organisations move away from spreadsheets once they have more than a few dozen users. Our ergonomic management software is built around exactly that workflow.
Common mistakes with assessment frequency
- Treating a policy interval as the law. It is fine to have one, but label it correctly.
- Counting the date and ignoring the events. A two-year-old assessment is not automatically out of date, and a two-week-old one can be if the desk has moved.
- Assessing once and never closing actions. A review is only meaningful if earlier findings were acted on.
- Forgetting the second workstation. Home, hot desks and satellite offices count if they are habitual.
- Relying on self-reporting alone. People often live with discomfort for weeks before mentioning it.
Frequently asked questions
Do DSE assessments expire?
Not on a fixed date. Irish and UK law do not give an assessment a set lifespan. It stays valid until something changes or there is reason to believe it is no longer accurate, at which point it must be reviewed and updated.
Is a DSE assessment legally required every year?
No. An annual review is a common good-practice choice, but there is no annual legal requirement in Ireland or the UK. The legal duty is to repeat or review the assessment when circumstances change.
Is every two years the rule in Ireland?
No. A two-year cycle is widely used as a practical standard, but the Irish regulations do not specify a number of years. They require further analysis when an employee moves workstation or when significant equipment or technology changes are introduced.
Does a new laptop or monitor mean a new assessment?
Usually a review at least. In Ireland, significant new or changed equipment at an individual workstation is a named trigger. In the UK, a significant change to the workstation falls under the review duty. A like-for-like swap may need only a quick check, while a different screen size, chair or laptop arrangement should be reassessed properly.
What should happen when an employee reports discomfort?
Reassess promptly. HSE lists reported pain or discomfort as a reason to carry out an assessment, and a symptom is strong evidence that the existing setup may no longer be valid. Employees with visual difficulties may also be entitled to an eye test under national rules.
Do hybrid and home workers need to be reassessed as often as office staff?
The same triggers apply. Habitual home workstations are treated as workstations, so a new desk, a new laptop, a move of house or reported discomfort should prompt a review in the same way.
Is the answer the same in the United States, Canada or Australia?
Not necessarily. These countries do not follow the EU-derived DSE model, and rules differ by state, province or territory. Check your own regulator, and use the trigger-based principle in this guide as a sensible default.
Last reviewed: November 2026. This article is general information, not legal advice. Regulations are updated from time to time, so always confirm the current position with your national regulator.
Next steps
If you are tightening up how your organisation tracks reassessments, two natural next steps are building in-house capability with assessor training for your own team, and keeping every trigger, review and sign-off in one place with ergonomic management software. For the full picture of how assessments fit into your wider compliance duties, see the KOS DSE assessments hub and our DSE compliance and legislation articles.
Sources and further reading
- Ireland: S.I. 299/2007, Regulation 72; Safety, Health and Welfare at Work Act 2005, section 19; HSA guide to Chapter 5 of Part 2
- United Kingdom: DSE Regulations 1992, Regulation 2; HSE workstations and assessment; HSE guidance L26
- European Union: Directive 90/270/EEC
- Other countries: OSHA (US), CCOHS (Canada), Safe Work Australia
The short answer: neither Irish nor UK law gives a DSE assessment an expiry date. There is no legal "every year" or "every two years" rule.
What the law does require is that the assessment is repeated whenever something changes: a new or moved workstation, new equipment or technology, a change in who uses the workstation or how it is used, or any reason to believe the original is out of date. Many employers add a routine check every 12 to 24 months as company policy. That is sensible good practice, but it is not a legal minimum.
Search for this question and you will find guidance saying "annually", guidance saying "every two years" and guidance saying "there is no set period". They are not contradicting each other as much as they appear to. They are mixing up three different things: what the regulations require, what regulators recommend, and what individual employers choose to write into their own policies. This guide separates the three so you can build a review cycle you can justify to an inspector, an auditor or your own board.
What the law says about repeating a DSE assessment
Ireland
In Ireland, display screen equipment is covered by Chapter 5 of Part 2 of the Safety, Health and Welfare at Work (General Application) Regulations 2007 (S.I. No. 299 of 2007), supported by Schedule 4 and the Health and Safety Authority's guide to the DSE regulations. They apply to employees who habitually use display screen equipment as a significant part of their normal work.
Regulation 72(1)(b) requires the employer to analyse each workstation for risks to eyesight, physical problems and mental stress. Regulation 72(1)(f) then requires a further analysis in two situations: when an employee moves to a new workstation, and when significant new work equipment, a change of equipment or new technology is introduced at that person's workstation. The regulations do not set a number of years between assessments.
The wider Safety, Health and Welfare at Work Act 2005 also matters. Section 19(3) requires an employer to review a risk assessment where there has been a significant change in what it covers, or where there is another reason to think it is no longer valid. A DSE assessment is a risk assessment, so that duty sits alongside the specific DSE rules.
United Kingdom
In Great Britain, the Health and Safety (Display Screen Equipment) Regulations 1992 (as amended) require a suitable and sufficient analysis of workstations. Regulation 2(2) says the assessment must be reviewed where there is reason to suspect it is no longer valid, or where there has been a significant change in the matters it relates to. If the review shows changes are needed, the employer must make them.
The Health and Safety Executive applies this to workers who use DSE daily, for an hour or more at a time. It points to four situations that call for an assessment: a new workstation is set up, a new user starts at a workstation, a workstation or the way it is used changes, or a user reports pain or discomfort. Its guidance does not set a fixed review interval either. Northern Ireland has its own equivalent regulations, overseen by HSENI, so check the local rules if you operate there.
The European baseline
Both countries' rules trace back to Council Directive 90/270/EEC. It requires employers to analyse workstations, to train workers whenever the organisation of the workstation is substantially modified, and to offer eye and eyesight tests before display screen work starts, at regular intervals afterwards, and when visual difficulties arise. Like the national laws built on it, it works on a trigger basis rather than a fixed calendar.
| Jurisdiction | Fixed repeat interval? | What triggers a repeat | Where to check |
|---|---|---|---|
| Ireland | No | Employee moves workstation; significant new or changed equipment or technology (Reg 72(1)(f)); significant change or reason to doubt validity (s.19(3), 2005 Act) | HSA DSE FAQs |
| Great Britain | No | Reason to suspect the assessment is no longer valid, or a significant change (Reg 2(2)); HSE also lists new workstation, new user, changes in use and reported discomfort | HSE workstation guidance |
| EU baseline | No | Workstation analysis duty; training when the workstation is substantially modified; eye tests at regular intervals | EUR-Lex summary |
| Everywhere else | Varies | Depends on national or regional law. See the section on other countries below. | Your own workplace safety regulator |
The events that should trigger a fresh assessment
Because the law is event-driven, the most useful thing an employer can do is make sure those events are actually noticed. Most overdue assessments are not forgotten on a calendar. They are missed because nobody told the person responsible that something had changed.
| Trigger | Why it matters | Typical response |
|---|---|---|
| New starter or new user of a workstation | A setup that suited the previous person rarely suits the next one | Full assessment, ideally in the first week |
| Employee moves desk, floor or building | Named directly in Irish regulations and in HSE guidance | Full assessment at the new workstation |
| New or changed equipment (chair, monitor, laptop, docking station, sit-stand desk) | Height, reach and screen position all change | Full or targeted review, depending on scale |
| New technology or software that changes how the job is done | Can change screen time, posture and task pattern | Review the affected workstations |
| Change of role or task mix | More screen time or more intensive keying raises exposure | Review, and confirm the person is still a habitual user |
| Office layout, lighting or glare changes | Environmental factors are part of the analysis | Review the affected area |
| Reported pain, discomfort or visual difficulty | A direct signal that the existing assessment may not be working | Prompt reassessment, with eye test access where relevant |
| Actions from the last assessment still open | An assessment that identified risks but changed nothing has not controlled them | Close out the actions, then confirm |
| Change in where or how someone works (for example moving to hybrid) | A new habitual workstation needs its own analysis | Assess the new workstation |
Which assessment fits the trigger?
Once you know why a reassessment is due, the next question is which type suits the situation. Hover over or tap a card to see where each one fits.
-
Remote Ergonomic
Click for info
DSE AssessmentsNew home setup or hybrid moveRemote Ergonomic DSE Assessments
Flexible sessions for home, remote and hybrid teams when a desk, laptop or working pattern changes.
Learn More -
In-Person Ergonomic
Click for info
DSE AssessmentsOffice move or new equipmentIn-Person Ergonomic DSE Assessments
Tailored onsite sessions for new starters, desk moves, refits and equipment changes.
Learn More -
Detailed Ergonomic
Click for info
DSE AssessmentsReported discomfort or specific needsDetailed Ergonomic DSE Assessments
Personalised evaluations when an employee reports symptoms or has medical or pregnancy-related needs.
Learn More -
Workplace Ergonomic
Click for info
Needs AssessmentsNeeds have changedWorkplace Ergonomic Needs Assessments
In-depth assessments when someone's needs have changed, such as returning to work after illness or injury.
Learn More
Where "every year" and "every two years" come from
You will often see a review cycle of 12 months or 24 months quoted as if it were a rule. It is not a statutory requirement in Ireland or the UK. These intervals are policy choices, usually adopted for three reasons: they give a defensible audit trail, they catch gradual drift (people slowly return to poor habits, equipment wears), and they pick up changes that nobody reported.
If you set an interval, document it as your organisation's own standard. Do not describe it as a legal or regulator-set requirement, because that is easy to get wrong in an audit or an incident investigation. A risk-based approach is usually more defensible than one blanket date:
| Situation | Suggested review approach (good practice, not law) |
|---|---|
| New starters | Assess at or very soon after the start date |
| Any trigger event above | Reassess promptly and in proportion to the change |
| Reported symptoms or visual difficulty | Treat as priority and reassess quickly |
| Higher-risk users (long screen hours, past issues, shared or hot desks) | Routine check at around 12 months |
| Stable, low-risk users with no changes | Confirmation review at around 12 to 24 months, such as a refreshed self-check reviewed by a competent person |
Hybrid and home workers
The triggers are the same wherever the screen is. If someone habitually works from home, that home workstation is a workstation in its own right, and a new desk, laptop, monitor or move of house is a trigger in the same way a change in the office would be. If someone splits their week between locations, each habitual workstation needs to be covered. For how the home-based side of this works in practice, see our guide to remote ergonomic assessments.
Other countries: check your national rules
This is where the answer genuinely depends on where you work. Not every country has a dedicated display screen law. Some rely on general duties to manage workplace risk, some use codes of practice or standards, and in federal systems the rules can differ by state or province. Always confirm the position with your own regulator before setting a policy.
| Region | What to know | Start here |
|---|---|---|
| United States | OSHA states it has no specific standard for computer workstations, but offers an ergonomics eTool. State plans can differ. | OSHA computer workstations |
| Canada | Rules vary by province and territory. CCOHS publishes office ergonomics guidance, and CSA Z412 covers office ergonomics. | CCOHS office ergonomics |
| Australia | Work health and safety laws apply, supported by a model code on hazardous manual tasks. Check whether the code has legal effect in your state or territory. | Safe Work Australia |
| Any other country | Search for your national workplace safety authority and look for display screen, VDU or office ergonomics guidance. | Your national regulator |
Whatever the local rule, the safest working principle travels well: reassess when the person, the equipment, the task or the setting changes, and when someone reports a problem.
What a current DSE assessment record should show
If a regulator, insurer or auditor asks whether your assessments are up to date, the question is really whether you can evidence that. A defensible record normally shows:
- who was assessed, at which workstation and on what date;
- who carried out or reviewed the assessment, and their competence;
- the risks found, the actions agreed, the owner of each action and the date it was completed;
- the reason for any reassessment, such as a move, new equipment or a reported symptom;
- when the next review is due, and whether that date is a legal trigger or an internal policy interval.
The more that record is held in one place, the easier it is to spot who is overdue. This is why many organisations move away from spreadsheets once they have more than a few dozen users. Our ergonomic management software is built around exactly that workflow.
Common mistakes with assessment frequency
- Treating a policy interval as the law. It is fine to have one, but label it correctly.
- Counting the date and ignoring the events. A two-year-old assessment is not automatically out of date, and a two-week-old one can be if the desk has moved.
- Assessing once and never closing actions. A review is only meaningful if earlier findings were acted on.
- Forgetting the second workstation. Home, hot desks and satellite offices count if they are habitual.
- Relying on self-reporting alone. People often live with discomfort for weeks before mentioning it.
Frequently asked questions
Do DSE assessments expire?
Not on a fixed date. Irish and UK law do not give an assessment a set lifespan. It stays valid until something changes or there is reason to believe it is no longer accurate, at which point it must be reviewed and updated.
Is a DSE assessment legally required every year?
No. An annual review is a common good-practice choice, but there is no annual legal requirement in Ireland or the UK. The legal duty is to repeat or review the assessment when circumstances change.
Is every two years the rule in Ireland?
No. A two-year cycle is widely used as a practical standard, but the Irish regulations do not specify a number of years. They require further analysis when an employee moves workstation or when significant equipment or technology changes are introduced.
Does a new laptop or monitor mean a new assessment?
Usually a review at least. In Ireland, significant new or changed equipment at an individual workstation is a named trigger. In the UK, a significant change to the workstation falls under the review duty. A like-for-like swap may need only a quick check, while a different screen size, chair or laptop arrangement should be reassessed properly.
What should happen when an employee reports discomfort?
Reassess promptly. HSE lists reported pain or discomfort as a reason to carry out an assessment, and a symptom is strong evidence that the existing setup may no longer be valid. Employees with visual difficulties may also be entitled to an eye test under national rules.
Do hybrid and home workers need to be reassessed as often as office staff?
The same triggers apply. Habitual home workstations are treated as workstations, so a new desk, a new laptop, a move of house or reported discomfort should prompt a review in the same way.
Is the answer the same in the United States, Canada or Australia?
Not necessarily. These countries do not follow the EU-derived DSE model, and rules differ by state, province or territory. Check your own regulator, and use the trigger-based principle in this guide as a sensible default.
Last reviewed: November 2026. This article is general information, not legal advice. Regulations are updated from time to time, so always confirm the current position with your national regulator.
Next steps
If you are tightening up how your organisation tracks reassessments, two natural next steps are building in-house capability with assessor training for your own team, and keeping every trigger, review and sign-off in one place with ergonomic management software. For the full picture of how assessments fit into your wider compliance duties, see the KOS DSE assessments hub and our DSE compliance and legislation articles.
Sources and further reading
- Ireland: S.I. 299/2007, Regulation 72; Safety, Health and Welfare at Work Act 2005, section 19; HSA guide to Chapter 5 of Part 2
- United Kingdom: DSE Regulations 1992, Regulation 2; HSE workstations and assessment; HSE guidance L26
- European Union: Directive 90/270/EEC
- Other countries: OSHA (US), CCOHS (Canada), Safe Work Australia
and then Add to Home Screen.
