Employers are being warned that they face injury compensation claims and fines if they fail to ensure safe working practices at height.
The warning follows the prosecution of farmer Francis Caley in Hull after one of his employees fell over 4.5 metres through a roof, which was not strong enough to support a person, while carrying out repairs in May last year.
Farm worker Charles Leslie Nendick suffered fractures to his spine, pelvis and hip and a gash to the head in the work injury.
"The hazards and risks of working on roofs are well documented," commented Health and Safety Executive (HSE) inspector Alan Sheldon.
"HSE has produced a lot of guidance over many years specifically for the agriculture industry where approximately 70 fatalities have occurred from falls in the last ten years."
It follows news that Northumberland malting firm Simpsons Malt has been fined GBP 10,000 after an employee was injured by falling from the forks of a forklift truck.