Mowlem has been fined £8,000 after admitting health and safety breaches on the troubled Bath Spa project.
Bath Magistrates' Court imposed the fine after a Health and Safety Executive investigation found that Mowlem had no safety system in place for carrying out repairs on the roof of the Spa's Cross Bath.
Mowlem was ordered off the Bath Spa project in April by Bath and North East Somerset council. The scheme has been hit with delays and spiralled over budget.
This latest blow follows the death of carpenter John Cox, 54, who suffered serious head injuries while working on one of the spa buildings in May 2003 and died in hospital two weeks later.
Mowlem has also paid out £12,100 in costs on top of the fine.
The company said it fully accepted the court's sentence, but added: 'The HSE has accepted that the breach was in no way either the cause of or a contributory factor in the unfortunate death of Mr Cox.'
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