Site welfare is not optional. The HSE is clear about that and so is the legislation. Every construction site in the UK has to have adequate welfare facilities in place from the moment work begins. Not from week two, not once the site is properly set up. From day one.
The Law Behind It
Two pieces of legislation set the framework for construction site welfare in the UK.
The Construction (Design and Management) Regulations 2015 (CDM 2015) place a clear duty on the principal contractor to ensure that suitable welfare facilities are in place and maintained throughout the construction phase. This applies to all notifiable projects, though in practice the welfare obligation applies to every site regardless of size.
The Workplace (Health, Safety and Welfare) Regulations 1992 establish the minimum standards those facilities have to meet, covering sanitary provision, washing facilities, drinking water, rest areas, changing rooms and somewhere to store and dry clothing.
The HSE welfare guidance gives detailed practical advice on meeting both sets of requirements. The short version is that provision needs to be proportionate to your workforce size, in place from the start, and kept clean and in working order throughout the project.
What You Actually Need to Provide
Toilets. One per seven workers as a minimum, with separate facilities for men and women where reasonably practicable. They need lighting, ventilation and to be kept clean. Chemical toilets are acceptable as a short-term measure but are not adequate for a longer project.
Washing facilities. Wash basins with running hot and cold water, soap and proper drying facilities, located close to the toilets and any changing areas.
Drinking water. A wholesome supply, clearly identified, at accessible locations across the site.
A rest area. Somewhere workers can sit, eat and take breaks out of the weather, with a means of heating food and boiling water. Gathering at the site entrance does not qualify.
Changing and drying facilities. Where workers have to change into specialist clothing or PPE, there needs to be somewhere to do that, somewhere to store both work and personal clothing securely, and somewhere to dry wet gear. In the British climate, drying facilities matter more than a lot of contractors initially expect.
How a Temporary Welfare Structure Delivers This
A purpose-built temporary welfare structure is designed to cover all of the above in one building. For a site running 30 to 50 workers, a typical unit includes a canteen and rest area, four to six toilet cubicles with washing facilities, a drying room, changing areas with lockers and a site office or foreman space.
All of our welfare structures come with full climate control as standard. The HSE expects facilities to be warm in winter, and a welfare unit that is barely habitable in cold weather is not going to pass scrutiny.
We have delivered welfare structures across a huge range of project scales, from compact units for small housebuilding sites through to the eight-structure deployment we completed for the Ministry of Defence at Manston, where separate buildings were needed for reception, catering, family support and office functions across the full site.
How Many Units Do You Need
Up to 15 workers: a single compact unit covering all basic requirements, typically around 6m x 6m. 15 to 30 workers: a larger single unit or two linked structures, from 6m x 9m up to 9m x 12m. 30 to 75 workers: multiple linked units or a single larger structure from 12m x 15m upwards, with toilet, canteen, changing and drying separated into dedicated spaces. Above 75 workers: a bespoke configuration based on headcount, shift patterns and site layout.
We always recommend a site visit for anything above the basic level. Turning up to install and discovering there is not enough footprint for what you have ordered is a problem for everyone.
When Does It All Need to Be in Place
Before the first worker arrives. That is what the regulations say and that is what the HSE enforces. Welfare provision belongs in your pre-mobilisation planning.
We can typically install a standard welfare structure within two to five days of order confirmation. For genuinely urgent requirements, portable cabin units can sometimes be operational in 24 hours.
For most construction projects, hiring is the most straightforward approach. The structure goes in before the project starts, is maintained throughout and comes out cleanly when the job is done. Book a site visit or call 0203 758 3315 and we will turn a quote around the same day.