There is no single lone working act in the UK, but as an employer you do have a legal obligation to your lone workers, just as you do to any other workers. And with up to eight million people working alone in the UK, this is a significant legal exposure when not adequately addressed.
In this guide we lay out which laws apply to lone working, what ‘so far as is reasonably practicable’ actually demands of you, what compliance looks like, and the consequences of getting lone worker protection wrong.
Is it legal to work alone in the UK?
Yes, it’s legal to work alone in the UK. What the law is interested in is how you manage the risks inherent in this kind of work, rather than stopping it altogether.
But who are lone workers in the first place? According to the HSE definition, a lone worker is someone working by themselves without close or direct supervision. This covers workers doing home visits, solo shifts on fixed sites and field-based roles, as well as anyone who occasionally works alone, even if they’re supervised the rest of the time.
The laws that apply to lone workers
As we’ve mentioned, there’s no single lone working law in the UK. Instead, several duties apply:
Health and Safety at Work etc. Act 1974
Section 2 of this act states that: ‘It shall be the duty of every employer to ensure, so far as is reasonably practicable, the health, safety and welfare at work of all his employees.’
And it’s worth noting that this duty isn’t only limited to employees. Section 3 extends it to ‘persons not in his employment who may be affected’ by the way the business is run. This means it's relevant to contractors and members of the public, including wherever a lone worker's role brings them into contact with such third parties.
Management of Health and Safety at Work Regulations 1999
Here, Regulation 3 states that every employer ‘shall make a suitable and sufficient assessment of’ the risks employees face at work, making the general duty more specific. And if you have five or more employees, the regulation requires you to record the significant findings of any assessment, and any group of employees identified as being especially at risk. Lone workers are an example of such a group.
Corporate Manslaughter and Corporate Homicide Act 2007
This act exists for cases where a death results from a gross breach of duty of care, and where senior management’s approach was a substantial factor in this breach. Convictions under this act can carry an unlimited fine.
Other duties worth knowing
The Health and Safety (Display Screen Equipment) Regulations 1992 are relevant for any employee who habitually uses display screen equipment as part of their work. This covers people working from home as well as those in an office.
As an employer you’re also required to take reasonable steps to prevent the sexual harassment of employees, under the Worker Protection (Amendment of Equality Act 2010) Act 2023. This is a general preventative duty rather than one specific to harassment from any particular source, though it's still worth being aware of for lone workers whose roles put them in contact with clients or the public.
What ‘so far as is reasonably practicable’ actually means
This phrase, as used in the Health and Safety at Work etc. Act 1974 - ‘It shall be the duty of every employer to ensure, so far as is reasonably practicable, the health, safety and welfare at work of all his employees’ - is significant, and worth examining in more detail.
The leading authority on the meaning of this wording is Edwards v National Coal Board [1949] 1 All ER 743, a legal case in which the Court of Appeal held that ‘reasonably practicable’ is narrower than ‘physically possible’.
What it requires is the weighing of the risk (likelihood and severity) against the cost, time and trouble of the controls needed to address it. Where there exists a gross disproportion between them - meaning the risk is small compared to the sacrifice required - the duty is discharged. The key message here is that you’re not expected to eliminate every possible risk, but you are expected to take proportionate steps.
One point that is worth understanding is that under Section 40 of the 1974 Act, the burden of proof is reversed in prosecution. This means it’s the accused employer’s responsibility to prove that it wasn’t reasonably practicable to do more than they did. It’s not the prosecutor’s job to prove that it was.
This highlights the fact that a comprehensive risk assessment and evidenced controls are much more than good practice; in fact they can form a central part of your defence if something goes wrong.
What compliance looks like in practice
Generally speaking, meeting your duties requires you to assess the risk of all your lone-working roles, put appropriate controls in place, and be able to provide evidence of doing so.
In practice, this means identifying every lone worker in your organisation (even if they only work alone occasionally), mapping the hazards specific to those roles and locations, implementing proportionate controls (which could include training, check-ins, or monitoring), recording your findings, and reviewing your process regularly.
We’ve written a step-by-step guide on how to carry out a lone worker risk assessment if you’d like to understand this area in more detail.
The consequences of getting it wrong
A lot of guides discussing the legal responsibilities of employers towards lone workers mention ‘hefty fines’ without adequately explaining what you can expect if you get things wrong. With that in mind, here’s the enforcement ladder, in order:
HSE enforcement notices
Prior to any court proceedings HSE inspectors can issue improvement notices that require specific action within a set timeframe, or prohibition notices to put an immediate stop to activities where there’s a risk of serious personal injury. Neither notice is a criminal conviction, but ignoring them is a further offence.
Prosecution and fines
The most serious prosecutions under the 1974 Act sections 2 and 3 go to the Crown Court, where fines are unlimited. Since 2016, organisations are sentenced using the Sentencing Council's Health and Safety Offences, Corporate Manslaughter and Food Safety and Hygiene Offences Definitive Guideline. This guideline establishes fine starting points and ranges based on an organisation’s turnover, as well as on culpability and the seriousness of the risk of harm.
What’s interesting here is that under this guideline, health and safety offences ‘do not require proof that the offence caused any actual harm’, as ‘the offence is in creating a risk of harm’. This means a serious breach can result in a large fine, even if nobody was actually hurt. Seven-figure fines are not unknown for large organisations.
Personal liability
It’s also worth knowing that directors and managers aren’t protected by a corporate structure. As Section 37 states, ‘Where an offence…committed by a body corporate is proved to have been committed with the consent or connivance of, or to have been attributable to any neglect on the part of, any director, manager, secretary or other similar officer…he as well as the body corporate shall be guilty of that offence and shall be liable to be proceeded against and punished accordingly.’ This can mean fines and even custodial sentences.
While the Corporate Manslaughter and Corporate Homicide Act 2007 is at the most serious end of the scale, it targets the organisation, rather than individuals within it. As mentioned, convictions under this act carry unlimited fines.
A real example
Varcity Living Limited was fined £50,000 in July 2026 after an 18-year-old apprentice joiner was fatally injured by unsecured building materials while working alone at a renovation site in December 2023.
The HSE investigation found no lone working policy, inadequate supervision and an inadequate risk assessment. Following this the company pleaded guilty to breaching sections 2(1) and 3(1) of the 1974 Act. Furthermore, its director pleaded guilty to a Section 37 offence and received a suspended prison sentence.
A note for smaller employers
Please note, if you have fewer than five employees, you don’t have to record your risk assessment in writing. However, you do still have to carry one out.
Some small businesses also mistakenly believe they don’t have lone workers, but as we’ve mentioned, even someone who occasionally works without close or direct supervision (including working from home) counts as a lone worker, meaning the duties discussed here apply.
The bottom line
While there’s not one single lone worker law in the UK your duty of care to this category of employee is well established. To meet that duty you need to address the risk, take proportionate steps, and be able to prove it with evidence.
If you’d like to learn more about your lone worker exposure, feel free to book a security risk assessment. Alternatively, get in touch with the team to discuss your situation.
Frequently asked questions
Which legislation applies to lone workers in the UK?
The Health and Safety at Work etc. Act 1974 (sections 2 and 3) and the Management of Health and Safety at Work Regulations 1999 (Regulation 3). The Corporate Manslaughter and Corporate Homicide Act 2007 also applies at the most serious end of the scale. There is no specific lone-working statute; general duties cover it in full.
Is it illegal to work alone in the UK?
No, working alone is legal. The law requires you as the employer to assess risk and put proportionate controls in place.
Can an employee refuse to work alone?
Under Section 44 of the Employment Rights Act 1996, a worker can't be subjected to a detriment for leaving, or refusing to return to, a situation they reasonably believe involves serious and imminent danger they couldn't reasonably avert. This isn’t a general right to refuse to work alone, but it’s a protection where there’s genuine, reasonably believed danger.
Do you have to record a lone-working risk assessment?
If you employ five or more people you have to record the significant findings in writing. Fewer than five and you don’t need to record anything in writing, but you do still need to carry out the assessment.
What are the penalties for not protecting lone workers?
They include HSE improvement and prohibition notices right through to unlimited fines in the Crown Court, personal liability for directors and managers under Section 37, and, in the gravest cases, prosecution under the Corporate Manslaughter and Corporate Homicide Act 2007.
Are employers responsible for contractors and self-employed people working alone?
In part, yes. Section 3 of the 1974 Act extends a duty to people who aren't employees but may be affected by how the business conducts its activities. This can include contractors and the self-employed working on its behalf.
Please note, this is general information and not legal advice. Nothing here should be read as a statement that any particular business is in breach of its duties. You should take your own professional advice on your specific circumstances.