Accident claim specialists are offering employees cash for copies of their employer's accident book.
The practice has become increasingly common in the past few months, especially in the north of England, according to Croner Consulting's Health and Safety Helplines.
Companies are required by law to keep an accident book to record details of all accidents, whether minor or serious, in the workplace. The fear is that the records will be used to launch insurance claims against the company.
Trevor Davies, senior consultant for the safety and technical team at Croner Consulting said: "This is a real serious threat to businesses of any size and completely against the law. The accident book is usually available to staff at all times, making 'cash for copies' a potentially easy money-making scheme."
Davies said accident books should be kept secure and all incidents brought to the attention of a nominated, responsible person.
Companies should inform their insurers immediately of any incident that could form the basis of a claim by an employee.