A Brief History Of The COSHH Regulations

The Control of Substances Hazardous to Health (COSHH) Regulations apply to nearly every workplace because most businesses use hazardous substances in one form or another. From mild irritants to high-risk chemicals, COSHH covers many everyday substances like cleaning solutions, paints and inks, to trade substances like cement and wood dust.

The COSHH regulations were first introduced over 35 years ago. Their purpose? To protect employees and others from harmful exposure to hazardous substances.

Many of the substances we use in our jobs can be dangerous if they are incorrectly used, or if we don't protect ourselves. At work, we have various health and safety laws to help protect people from harm, and COSHH is in place to protect our health from the harm that may come from exposure to hazardous substances.

COSHH applies to a wide range of substances and preparations (mixtures of two or more substances) which have the potential to cause harm to health if they are ingested, inhaled, or are absorbed by, or come into contact with, the skin, or other body membranes. Hazardous substances can occur in many forms, including solids, liquids, vapours, gases and fumes. They can also be simple asphyxiants or biological agents.

Find out more about the types of substances COSHH applies to in What Substances Does COSHH Cover?

When was COSHH introduced?

The Control of Substances Hazardous to Health Regulations first came into force on the 1st of October 1989. However, these regulations were made, introduced, and laid before parliament in 1988. So this first version of the regulations is known as and was named The Control of Substances Hazardous to Health Regulations 1988 (even though they didn't come into force until a year later in 1989).

COSHH was the most significant legislation to be introduced under the Health and Safety at Work etc Act 1974. When it was first introduced in 1988, COSHH didn't include biological agents like moulds, bacteria and viruses. However, it was expanded to cover these 6 years later, in 1994.

🗓️ 1988

The Control of Substances Hazardous to Health (COSHH) Regulations 1988 were first introduced, coming into force on the 1st of October 1989.

Why was COSHH introduced?

Employers already had health and safety legal responsibilities to protect the health and safety of employers and others, before COSHH was first introduced in 1988. The Health and Safety at Work etc Act came into force in 1974, and that meant that employers had to, by law, protect people from harm.

So if we already had health and safety legislation telling us to protect health why did we need the COSHH regulations, specifically for hazardous substances?

Well, COSHH expands on this general requirement to protect people from harm, by providing employers with details on how to provide that protection when it comes to substances hazardous to health. It doesn't just tell you to protect people from harm, but how to protect their health, when it comes to hazardous substances.

Get to know the legal requirements in COSHH Responsibilities For Employers And Employees.

It might not be obvious when a substance is harmful. The harm might not occur straight away. Certain types of wood dust can cause cancer, for example, but this takes years to develop. Some substances might cause birth defects, but this doesn't show itself until the person who has been exposed has a child.

By the time you realise the harm has occurred, it might be too late to protect yourself. The damage has already been done.

COSHH provides legislation specific to the control of the types of hazards that only come from substances hazardous to health. And, it allows things like legal exposure limits for substances, to be introduced and enforced.

Find out more about workplace exposure limits in COSHH Workplace Exposure Limits (WELs) Explained.

COSHH was introduced to give employers a better understanding of what needs to be done to protect health and control exposure to hazardous substances. It provides a framework for assessing health risks, implementing controls, and monitoring exposure.

When was COSHH last updated?

Major updates (new versions) of the COSHH regulations happened in:

• 1988 (first)
• 1994
• 1999
• 2002 (latest)

While the latest major version of the COSHH regulations happened in 2002, the latest update is The Control of Substances Hazardous to Health (Amendment) Regulations 2004.

🗓️ 2002

The latest version of the COSHH regulations is the Control of Substances Hazardous to Health (COSHH) Regulations 2002. This version came into force on the 21st of November 2002.

This latest version of the regulations includes:

• New duties on employers regarding providing information and establishing warning systems
• Extending COSHH assessment requirements to cover hazardous properties and health effects
• Specified and prioritised control measures
• Amendments for health surveillance and air monitoring records
• Duties for labelling and identifying contents of containers and pipes

🗓️ 2003

The 2003 update (The Control of Substances Hazardous to Health (Amendment) Regulations 2003), added the definition 'mutagen' to be included alongside carcinogen.

“mutagen” means a substance or preparation which if classified in accordance with the classification provided for by regulation 4 of the Chemicals (Hazard Information and Packaging for Supply) Regulations 2002(2) would be in the category of danger, mutagenic (category 1) or mutagenic (category 2) whether or not the substance or preparation would be required to be classified under those Regulations;

🗓️ 2004

The last update to COSHH at the time of writing is The Control of Substances Hazardous to Health (Amendment) Regulations 2004. This update included the replacement of the definition "maximum exposure limits" with "workplace exposure limits", and the description for adequately controlling exposure.

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Need help with COSHH? Start your COSHH register today by downloading our free template to help you identify the hazardous substances in use, and create COSHH assessments for your work activities.