An employer's legal responsibilities for lone workers in the UK come principally from the Health and Safety at Work etc. Act 1974 and the Management of Health and Safety at Work Regulations 1999: a duty of care for anyone working for them, and a duty to assess and manage the risks of lone working before it happens.
The law that applies
| Instrument | What it requires |
|---|---|
| Health and Safety at Work etc. Act 1974 | The general duty to ensure, so far as is reasonably practicable, the health, safety and welfare of employees, and of others affected by the work |
| Management of Health and Safety at Work Regulations 1999 | A suitable and sufficient risk assessment, with the significant findings recorded where there are five or more employees |
| RIDDOR 2013 | Reporting of specified workplace injuries, occupational diseases and dangerous occurrences to the enforcing authority |
| Corporate Manslaughter and Corporate Homicide Act 2007 | Corporate criminal liability where a gross management failure causes a death |
The HSE's guidance on how these duties apply to people who work alone is Protecting lone workers (INDG73). Guidance is not law, but it is what an inspector measures arrangements against, and departing from it needs a reasoned answer.
What the duties mean in practice
The legal chain runs: identify the lone working, assess its risks, control them, and keep the controls working. Because lone workers cannot rely on a colleague to raise the alarm, the assessment must answer the questions supervision would otherwise cover. How does this person summon help if they are injured or threatened? How would anyone know if they did not return? The controls that answer those questions, from check-in procedures to monitored alarms, exist because "reasonably practicable" is judged against what was available and affordable, and monitored lone worker services are both.
The duty covers employees wherever they work, including at home, and extends to contractors and the self-employed working under the employer's control. Writing the arrangements into a lone worker policy is how employers evidence the duty was met before anyone asks.
What lone workers themselves must do
The 1974 Act places duties on employees too: to take reasonable care of their own safety, and to cooperate with the employer's arrangements. In lone working terms that means following the check-in procedure, using the equipment provided, and reporting incidents and near misses. An employer whose workers routinely bypass the procedure has a training and management problem, and the employer still owns it; worker duties supplement the employer's duty rather than transferring it.
Enforcement and what goes wrong
Health and safety law is enforced by the HSE and by local authorities, with powers running from improvement and prohibition notices to prosecution. After a serious incident involving a lone worker, the questions are predictable: where is the risk assessment, what did the policy say, was the procedure followed, and when was any of it last reviewed. Documentation is not bureaucracy here. It is the difference between demonstrating a managed risk and reconstructing one.
Where BS 8484 fits
BS 8484:2022 is voluntary and sits on top of the legal duties, not among them. The law decides whether a monitored alarm is a reasonable control for the risk; the standard decides whether that alarm comes with a fast-tracked police response. The relationship is covered in full on the BS 8484:2022 guide, and who tends to need the audited version is on who needs certification.