The PC has decided it might be worth looking at hiring purpose built welfare units to accommodate some of the guys that will be working away from home on a site that is expected to last for 8 months.

As far as I'm concerned, (I might be wrong!), the fact that the contractors are working away from home would be sufficient to warrant having accommodation on site.

HSG168 says:

(3) It may be acceptable, in limited circumstances, for construction employees to sleep on some projects, eg in purpose-built accommodation (including huttype dormitories) placed on site with ............

Can anyone cast any light on what would be considered acceptable 'limited circumstances' please?

NB, I do appreciate the need for a Fire Risk Assessment, siting of the units, welfare facilities that need to be covered - but if there are any other considerations I would be happy for anyone's input.

Many thanks.

Also when there is a need for constant servaillance of something on site.

Normally, construction workers would not need on-site accommodation unless they are working in a remote location. It is more normal for the employer to pay them a staying out payment to cover room and meals.

There was the relativley recent sad case of a security guard killed by carbon monoxide fumes from the heating system in his cabin - eight months and we will be well and truly back in to winter.

Then there is the current heatwave - temporary accomodation can be very hot causing sleep depravation / dehydration.

Curious to know if the PC just seen a re-run of Auf Wiedersehen Pet?

Unless it is very remote site you have to remember that you are dealing with people - even the large hotel groups can be talked in to a bulk booking discount for the guaranteed income.

I think you could be buying your way into a world of trouble here.  As others have said there are the issues of hygiene, servicing of the units, alcohol consumption (you can have that in a hotel too but at least they aren't on site with access to plant and equipment), provision of food and removal of wastes.  The list could go on for a long time.  Get them in a Travelodge or similar - I bet it won't cost any more.