A north-east company has been ordered to pay a fine of £15,000, as well as £3,193 in costs, following an incident in which a worker was seriously injured in a fall.
The accident occurred in March 2007 when an employee was carrying out joinery work on the second floor of a property.
He was using a saw horse - which was situated next to an unguarded stairwell - as a working platform in order to reach the roof joists.
After losing his balance, he fell 5.4 metres to the concrete floor beneath him, suffering serious injuries including a fractured pelvis and crushed vertebrae.
During a recent hearing at Darlington magistrates' court, Bussey and Armstrong - which has been owned by Estill Cooper Construction since 1985 - pleaded guilty to breaching health and safety regulations.
Commenting on the case, Health and Safety Executive inspector Jonathan Wills said: "It is totally unacceptable that so many lives of employees who work from height continue to be put at risk.
"Falls from height remain the most common kind of accident causing fatal injuries."