Wood dust is produced in almost all machining operations involving wood. Sanding or sawing hardwood releases fine wood dust, which poses a serious health risk to the respiratory system. In addition to the risk of exposure, wood dust can also create a risk of dust explosions.
Exposure to wood dust can lead to conditions such as asthma, chronic obstructive pulmonary disease (COPD) and nasal cancer. In combination with a spark, a locally high concentration of wood dust, or a dust cloud, can cause a dust explosion.
The risk of exposure to wood dust
The extent to which wood dust harms health depends, among other things, on the size of the dust particles and where they settle in the respiratory system. Inhalable dust is the portion of wood and other dust that is inhaled through the nose and mouth and can penetrate the upper respiratory tract. Respirable dust consists of the finest particles, which are inhaled through the nose and mouth and can penetrate deep into the lungs and the alveoli.
Suitable machinery and appropriate control measures can prevent hazardous exposure to wood dust. The use of compressed air or brooms for cleaning is not permitted, as this redistributes wood dust into the air and increases exposure.
The risk of a wood dust explosion
A dust layer of half a millimetre or more can already create an explosion risk. This risk is often underestimated. The explosion risk caused by wood dust must be prevented or reduced as far as possible. If there is no dust in the area, an explosion cannot occur.
In addition to paying attention to individual machines, attention must also be paid to keeping the work floor clean and to the placement of filter units and dust collection systems connected to extraction equipment. Dust must be removed without stirring it up, for example by vacuuming or by wet cleaning. Employers are also required to assess the level of risk of a dust explosion. This is done by completing an Explosion Protection Document (EPD).
The health risks of wood dust
Wood dust affects the skin, eyes and respiratory system. It can dry the skin and cause inflammation and allergic reactions. If wood dust comes into contact with the eyes, it may cause painful, burning and watery eyes, sensitivity to light and inflammation of the conjunctiva. Inhaling wood dust can cause serious respiratory complaints, including itching and irritation of the nasal mucosa, a blocked nose, a sore throat, nosebleeds, inflammation of the larynx and asthmatic symptoms. Hardwood dust has been classified as a carcinogenic substance in the Netherlands and in Europe since 1998. It can cause cancer in the nasal cavities.
Around 150 people in the Netherlands are diagnosed with this cancer each year. Because many of these patients have been exposed to wood dust, wood dust has been included since July 2025 on the list of substances for which compensation may be granted for substance-related occupational diseases under the TSB scheme.
What laws and regulations require from employers (RI&E)
Employers must implement the best possible working conditions policy to ensure that work does not adversely affect employee health or safety. Knowledge of the risks is a key basis for this policy; the Wood Dust module (Dutch) is available on the website arbocatalogus-timmerindustrie.nl. This is done through a Risk Inventory and Evaluation (RI&E). The risk of exposure to wood dust forms an essential part of the RI&E. This means that the nature, extent and duration of the exposure must be assessed. A recognized industry-wide RI&E (Dutch) is available for the RI&E.
How to reduce exposure to wood dust
The exposure assessment and the EPD form the basis for an Action Plan with measures to keep the risks as low as possible.
When implementing measures to reduce exposure, employers must follow the occupational hygiene strategy. The occupational hygiene strategy, also known as the STOP strategy, follows a logical and fixed order. Employers must first consider whether exposure can be reduced by consciously choosing particular types of wood, equipment or working methods. If substitution is not possible, all technically feasible controls must be applied. Working according to the STOP strategy and its 4 levels is mandatory. Examples of wood dust measures for each level are set out below.
- Source approach
Choose processing methods that minimise the amount of machining required. Use machines designed and equipped for this purpose. - Technical measures
Use a suitable wood dust extractor and connect machines in accordance with the supplier's instructions. Ensure the system and filters are properly maintained. - Organisational measures
Clean the area around the machines as often as necessary using a suitable industrial vacuum cleaner. - Personal protective equipment (PPE)
Personal protective equipment; such as respiratory protection. Only if there is no other option.
Supervision and enforcement
Despite the significant health risks, many work situations still involve exposure to wood dust. The Netherlands Labour Authority checks whether work involving wood dust is carried out as safely and healthily as possible. It also assesses what employers are doing to ensure that these risks remain controlled in the longer term. Where appropriate measures have not been implemented, the Netherlands Labour Authority will take enforcement action.