The Reporting of Injuries, Diseases and Dangerous Occurrences Regulations 2013, often known by the acronym RIDDOR, is a 2013 statutory instrument of the Parliament of the United Kingdom.

The Health and Safety Executive recommends that they report incidents to their employer and encourages voluntary notification to the relevant regulating authority.

Medical treatments are exempt, as are injuries arising from road traffic accidents[6] and to members of the armed forces (reg.10).

[11] The reporting of accidents and ill health at work has long been a legal requirement in the UK.

The information enables the Health and Safety Executive (HSE) and local government authorities "to identify where and how risks arise, and to investigate serious accidents".

This figure obscures the fact that in 2005, 2037 people died from mesothelioma arising from previous exposure to asbestos and "thousands more from other occupational cancers and lung diseases".

[16] According to the RIDDOR, such accidents must be reported in which an employee or self-employed person is away from work or cannot perform their normal duties for more than seven consecutive days because of their injuries.

- Collapse, overturning, or failure of any load-bearing part of a lift or hoist, crane or derrick, mobile powered access platform, access or window cleaning cradle, excavator, pile-driving frame or rig taller than 7 metres, or forklift truck.

Wells - Any of the following incidents in relation to a well, other than a water well: Pipelines or pipeline works - The following incidents in respect of a pipeline or pipeline works: Fairground equipment - The following incidents on fairground equipment, in use or under test: Carriage of dangerous substances by road tankers - Incident involving a road tanker or tank container used for the carriage of a dangerous substance[21] in which: Carriage of dangerous substances by road in packages - Incident involving a vehicle used for the carriage of a dangerous substance[22] in which: Dangerous occurrences that are reportable by responsible persons, save in offshore workplaces, are defined as (reg.2(1)/ Sch.2, Pt.1, paras.18-21): Collapse of building or structure - Unintended collapse or partial collapse of: Explosion or fire - Explosion or fire, due to ignition of material, in any plant or premises that results in the stoppage of that plant, or as the case may be the suspension of normal work, for more than 24 hours.

There are also specific reporting requirements for mines (Sch.2/ Pt.2, paras.22-40), quarries (Sch.2/ Pt.3, paras.41-48), rail transport systems (Sch.2/ Pt.4, paras.49-72) and offshore installations (Sch.2/ Pt.5, paras.73-83).

The responsible person, such as an employer, must keep records of reportable incidents and diseases, and other matters specified by the HSE to demonstrate compliance.