A contractor converting an eight storey former Ford office block into 384 flats has been prosecuted after 48 workers were found sleeping on the site.
The HSE was originally contacted in May by the Essex County Fire and Rescue Service who were worried for the men sleeping on the site in Basildon, Essex.
HSE carried out a joint inspection with ECFRS the same day and found numerous failings on site.
HSE concluded that there was a significant risk to life in the event of a fire and issued a prohibition notice preventing workers from sleeping on site.
Forty eight workers had to be re-housed into safer sleeping accommodation. At the time of the inspection approximately 120 men were working across the site.
A second prohibition notice closed the entire site until the appropriate steps had been taken to protect all workers from the dangers posed by fire.
RGB (Plastering and Construction) Limited, of Shrewsbury, pleaded guilty to breaching Regulation 29(a) and (c) of the Construction (Design and Management) Regulations 2015. They were fined £8,000 and ordered to pay costs of £6,130.
After the hearing HSE Inspector Adam Hills said: “This case highlights the importance of ensuring those who undertake construction work have the relevant skills, knowledge, training and experience to do so.
“There doesn’t have to be an injury or incident for HSE to take action. If you irresponsibly endanger the lives of those who are simply trying to earn a living then HSE can and will take proactive action to protect them.”