Wood dust is a human carcinogen and an asthma hazard. This guide distinguishes historical exposure and cancer estimates from current Great Britain limits and dated inspection findings.

Wood dust can cause occupational asthma and cancer. IARC classifies it as carcinogenic to humans, but that classification identifies a hazard rather than quantifying the risk from a particular job. This guide brings together dated research, HSE inspection findings and current Great Britain exposure-control guidance. Historical estimates are labelled so that they are not mistaken for a current workforce census.

Key facts and figures

  • 2.1 million people were estimated ever exposed to wood dust over the historical risk-exposure period used in Britain’s 2012 cancer-burden study — not a current exposed-worker count.
  • Group 1 — IARC classifies wood dust as a confirmed human carcinogen, causally linked to cancer of the nasal cavity and paranasal sinuses.
  • 5.91 is the pooled relative risk of sinonasal cancer from wood dust exposure in case-control studies (95% CI 4.31–8.11).
  • 29.43 was the pooled relative risk for sinonasal adenocarcinoma in the 2015 meta-analysis (95% CI 16.46–52.61); this is a study estimate, not an individual prediction.
  • 3 mg/m³ is the Great Britain eight-hour WEL for hardwood dust; softwood dust is 5 mg/m³ and a mixture uses the 3 mg/m³ limit.
  • 78% of businesses in HSE’s targeted 2022/23 woodworking inspection campaign failed to adequately protect workers from respiratory sensitisers; this was not a survey of all firms.
  • 402 enforcement actions were taken by HSE inspectors during that Dust Kills woodworking wave.
  • 4× is the comparative asthma risk for carpenters and joiners quoted in HSE’s woodworking guidance, rather than a newly measured 2026 rate.

Checked on 15 October 2026. Exposure and wood-dust-specific cancer figures below are historical research estimates; inspection findings refer to 2022/23 and the detailed exposure study was published in 2024 using earlier fieldwork. Current exposure-control duties are presented separately.

How many people are exposed to wood dust at work in the UK?

The 2012 British cancer-burden paper estimated 1,744,690 men and 404,352 women ever exposed to wood dust across the historical risk-exposure period, described in the paper as 1956–1996. The total of 2,149,042 therefore accumulates people over decades; it is not the number currently exposed, nor the workforce in a single base year. The study used past exposure to estimate later cancer burden.

Exposure is concentrated in a recognisable set of trades: joinery, furniture and cabinet making, sawmilling and timber processing, construction carpentry, shopfitting, and any workshop where wood is sawn, sanded, routed, turned or planed. As with silica, the hazard is generated by the work itself rather than bought in a labelled container, which is exactly why it is so easily missed in a COSHH risk assessment — there is no supplier warning on a plank of oak. Wood dust is nonetheless firmly a substance covered by COSHH, and one HSE inspectors ask about routinely in workshops.

Can wood dust cause cancer — is it a carcinogen?

Yes. IARC classifies wood dust as a Group 1 (confirmed human) carcinogen, causally linked to cancer of the nasal cavity and paranasal sinuses, in Monograph Volume 100C (2012). Group 1 is the highest certainty category in the IARC scheme — the classification reflects consistent human evidence, not animal studies alone.

The 2015 meta-analysis by Binazzi and colleagues estimated a pooled relative risk of sinonasal cancer of 5.91 in case-control studies (95% CI 4.31–8.11) and 1.61 in cohort studies (95% CI 1.10–2.37). For adenocarcinoma the pooled estimate was 29.43 (95% CI 16.46–52.61). These estimates come from different study designs and exposure histories and should not be read as a current worker’s absolute probability of cancer.

The 2012 burden paper also cites a historical furniture-worker cohort with a sinonasal-cancer mortality ratio of 4.3 (95% CI 2.2–7.8), rising to 8.4 (95% CI 3.9–16.0) in those with definite wood-dust exposure. These cohort findings support the occupational association; they do not establish the risk for every present-day furniture worker.

How much nasal cancer does wood dust cause in Britain?

The historical British burden research estimated that wood dust accounted for 10.02% of sinonasal cancer (95% CI 3.85–19.60%): approximately 11 deaths in 2005 and 39 cancer registrations in 2004. It also estimated 7.62% of nasopharyngeal cancer attributable to wood dust (95% CI 1.08–17.98%), about 7 deaths in 2005 and 14 registrations in 2004. These are modelled historical counts, not current annual surveillance totals.

HSE’s updated all-cause occupational-cancer tables apply attributable fractions to more recent cancer data. Across all occupational agents, sinonasal cancer accounts for about 60 deaths a year averaged over 2020–24 and 190 registrations averaged over 2018–22, with an attributable fraction of 34.4%. This broader total is not wood-dust-specific and should not be substituted for the older wood-dust estimates.

Cancer siteAttributable fraction or ratioBurden or measure, with period
Sinonasal cancer — wood dust alone10.02% (95% CI 3.85–19.60%)~11 deaths (2005) / ~39 registrations (2004)
Nasopharyngeal cancer — wood dust alone7.62% (95% CI 1.08–17.98%)~7 deaths (2005) / ~14 registrations (2004)
Sinonasal cancer — all occupational causes34.4%~60 deaths/year (2020–24) / ~190 registrations/year (2018–22)
Furniture-worker sinonasal SMR (definite exposure)8.4 (95% CI 3.9–16.0)Historical cohort mortality ratio

The table combines clearly dated historical wood-dust evidence with HSE’s updated model for all occupational causes of sinonasal cancer. The newer tables apply attributable fractions to more recent mortality and registration totals; they do not measure current exposure or provide new wood-dust-specific incidence counts. Rounded components may not sum exactly.

Is wood-dust nasal cancer a recognised industrial disease?

Carcinoma of the nasal cavity or associated air sinuses is prescribed disease D6 for Industrial Injuries Disablement Benefit in specified occupational circumstances, including qualifying woodworking employment. A claim still requires assessment of the disease, occupation and relevant benefit conditions. Prescription should not be described as automatic entitlement without proving eligibility.

IIAC’s review discusses historical clustering of nasal cancer in furniture workers and the evidence behind the prescribed-disease provisions. Such occupational studies help establish the association, but their case proportions should not be applied as the present-day share of all nasal cancers caused by woodworking.

What are the respiratory effects of wood dust?

HSE’s woodworking guidance states that carpenters and joiners are four times more likely to get asthma than other UK workers. This is a guidance statement, not a newly observed 2026 incidence ratio. Wood dust is a respiratory sensitiser: sensitisation can make subsequent low exposures trigger symptoms. Occupational-health advice and effective controls are important where symptoms or risks arise.

Occupational asthma as a disease in its own right — its overall UK case numbers, causes and trends — is covered on our dedicated occupational asthma statistics page; here it appears only as one of wood dust’s health endpoints. Because wood dust causes asthma, COSHH requires exposure to be reduced as low as reasonably practicable rather than merely kept below the exposure limit — the same heightened standard applied to carcinogens, worked through the COSHH hierarchy of control.

What is the workplace exposure limit for wood dust in Great Britain?

In Great Britain, the hardwood-dust WEL is 3 mg/m³ and the softwood-dust WEL is 5 mg/m³, both eight-hour time-weighted averages. Where hardwood and softwood dusts are mixed, the 3 mg/m³ limit applies to the whole mixture. These values describe an averaging period, not an instantaneous ceiling or a guaranteed safe level.

Because wood dust can cause asthma and hardwood dust can cause cancer, adequate control requires reducing exposure as low as reasonably practicable, as well as meeting the relevant WEL. HSE recommends suitable extraction at woodworking machines and powered hand tools, safe cleaning methods and suitable RPE where required. Tight-fitting RPE must fit the wearer and should supplement, not replace, adequate engineering controls.

What did HSE’s Dust Kills woodworking inspections find?

HSE’s June 2023 campaign update reported more than 1,000 inspections and found that 78% of inspected businesses were not adequately protecting workers from respiratory sensitisers. Inspectors took 402 enforcement actions. These findings describe the targeted 2022/23 campaign; they are not a measured failure rate for the whole woodworking industry.

A study published in 2024, using 2014–17 fieldwork, found that 38 of 216 hardwood or mixed-dust measurements (17.6%) exceeded 3 mg/m³, the limit that took effect in January 2020. Across all dust measurements, 15 of 252 (6.0%) exceeded 5 mg/m³, the limit at the time of fieldwork. Seven of 22 sites had face-fit testing and 13 had respiratory surveillance; 21 had fixed-machine LEV undergoing examination and testing. These sample findings should not be generalised to every workshop.

For context across all work exposures, HSE’s 2025 report estimates about 11,000 annual lung-disease deaths linked to past work. The Labour Force Survey estimated 22,000 new work-related breathing or lung problems a year averaged over 2022/23–2024/25. Neither total is a wood-dust-specific figure.

How should a workshop control wood dust?

Assess the dust created by each task, including cutting, sanding, cleaning and maintenance. Prevent exposure where practicable and otherwise control it adequately with suitable extraction, safe vacuum or wet cleaning, maintained equipment and any additional RPE needed. Arrange appropriate respiratory health surveillance and prompt assessment of reported symptoms; surveillance supports early detection but cannot guarantee prevention.

Training underpins all of it. Workers who understand that wood dust is a Group 1 carcinogen and a respiratory sensitiser — not just sawdust to be brushed away — use extraction and RPE differently. That understanding is exactly what the Regulation 12 information, instruction and training duty exists to deliver, and one of the topics covered in structured COSHH Training. For construction dusts specifically, respirable crystalline silica from cutting stone, concrete and brick is a separate hazard with its own limit — see our silica dust statistics for that.

Frequently asked questions

How many people are exposed to wood dust at work in the UK?

The often-quoted 2.1 million is a historical estimate of people ever exposed over the 1956–1996 risk-exposure period in a 2012 British cancer-burden paper. It is not a count of workers exposed now. Current controls should be based on the actual dust-generating work and exposure assessment.

Can wood dust cause cancer — is it a carcinogen?

Yes. IARC classifies wood dust as carcinogenic to humans. A 2015 meta-analysis found an association with sinonasal cancer, including a pooled relative risk of 5.91 in case-control studies and 29.43 for adenocarcinoma. Those research estimates are not current individual risk predictions.

What is the workplace exposure limit for wood dust in Great Britain?

The Great Britain eight-hour WEL is 3 mg/m³ for hardwood dust and 5 mg/m³ for softwood dust. A mixture uses the 3 mg/m³ limit. These are not guarantees of safety: exposure must also be reduced as low as reasonably practicable because of the relevant cancer and asthma hazards.

What did HSE’s Dust Kills woodworking inspections find?

HSE’s June 2023 update reported more than 1,000 inspections in its 2022/23 campaign, with 78% of inspected businesses failing to adequately protect workers from respiratory sensitisers and 402 enforcement actions. This was a targeted inspection programme, not a representative survey of all woodworking firms.

Is wood-dust nasal cancer a recognised industrial disease?

Yes. Nasal-cavity or associated air-sinus carcinoma is prescribed disease D6 in specified occupational circumstances, including qualifying woodworking work. Benefit entitlement still depends on the claimant meeting the disease, occupational and other relevant conditions.

Are carpenters more likely to get asthma?

HSE’s woodworking guidance quotes a fourfold comparative asthma risk for carpenters and joiners. This is not a newly measured 2026 rate. Wood dust can sensitise the respiratory system, so exposure needs effective control and symptoms require timely assessment.

Sources & references

Wood dust is a Group 1 carcinogen and a COSHH substance — make sure your team can recognise the risk and apply the right controls before the dust flies.

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Mark McShane
Mark McShane
Health & Safety Training Specialist, Online CPD Academy

Mark writes about workplace health & safety, COSHH and accredited online training for COSHH Training, part of Online CPD Academy.