The key piece of legislation for people who work at potentially dangerous heights in Great Britain is The Work at Height Regulations 2005. As stated on the HSE website, this legislation was put in place "to prevent death and injury caused by a fall from height". The regulations state that work at height must be:
- Properly planned
- Appropriately supervised
- Carried out in a safe manner by competent personnel only
Interestingly, the 2005 regulations do not specify any particular equipment that must be used when working at height - they simply state the need for "sufficent work equipment" and remind employers that, when selecting appropriate height safety equipment for any given task, they must take account of working conditions, fall distance, the duration of the job, and several other factors.
In a nutshell: the law doesn't state that you HAVE to use a safety harness or a fall arrest block, but you are required to have some kind of fall prevention system in place, and the aforementioned items are among the most commonly-used solutions. In the end, it is up to you to decide what kind of equipment is most appropriate for the task at hand.
What will happen if I don't use any height safety equipment?
If one of your employees suffers an accident whilst working at height, you may investigated by the Health and Safety Executive. If they decide that you neglected to provide the right safety equipment or otherwise failed to fulfil your duties as an employer (as prescribed by the 2005 regulations and several other pieces of legislation), you will likely be prosecuted, which can lead to hefty fines and even jail time.
So don't leave anything to chance! Plan your work properly, carry out a full risk assessment before starting, and always use the appropriate height safety equipment to minimise the risk of a fall.
Further Reading: Height Safety Checklist