Lancashire-based Maple Timber Frames has been fined £16,000 after a worker fractured his skull at a site in Tunbridge Wells in late 2008.
The self-employed timber frame erector had been subcontracted to Maple at a self-build project at Warwick Park when he fell more than 5m to the bottom of an “inadequately covered” stairwell, the Health and Safety Executive said.
The man suffered multiple fractures in the November incident, including a fractured skull.
Inspector Melvyn Stancliffe said the firm, owned by ECH Ltd, was guilty of “reckless breaches of the law”.
ECH pleaded guilty to breaching the Health and Safety at Work etc Act at Sevenoaks Magistrates’ Court. It was fined £16,000 and ordered to pay £5,000 in costs.