Sexual Harassment at Work in the UK: Employer Duties and Complaints Handling

Running a small business means wearing a lot of hats. But one hat you can’t afford to leave on the shelf is your duty to provide a safe, respectful workplace.

Sexual harassment at work is one of those issues that can escalate quickly - not just in terms of legal risk, but also team morale, retention, productivity, and reputation. The good news is that with the right policies, training, and a clear process for handling complaints, you can greatly reduce the chances of problems arising (and respond properly if they do).

In this guide, we’ll walk through what UK employers need to know about sexual harassment at work, what “reasonable steps” look like in practice, and how to handle complaints fairly and confidently.

What Counts As Sexual Harassment At Work?

If you’re going to prevent and manage sexual harassment at work, the first step is being clear on what it actually is.

Under the Equality Act 2010, sexual harassment is a type of unlawful discrimination. In plain English, it’s when someone experiences unwanted conduct of a sexual nature that has the purpose or effect of:

• violating their dignity, and/or
• creating an intimidating, hostile, degrading, humiliating or offensive environment.

There’s also “harassment related to sex” (conduct related to someone’s sex, not necessarily sexual conduct) and “less favourable treatment” because someone rejected or submitted to harassment. In practice, these often overlap - and they can all lead to serious legal consequences for a business.

Common Examples (Including “Grey Area” Scenarios)

Sexual harassment at work isn’t limited to obvious or extreme behaviour. It can include:

• sexual comments, jokes, “banter”, or gossip about someone’s sex life
• unwanted flirting or persistent requests for dates
• sexual gestures or staring
• sharing sexual images, memes, or links (including in WhatsApp/Slack groups)
• unwanted physical contact (from “accidental” touching through to serious assault)
• comments about someone’s appearance or body that make them uncomfortable
• abuse of authority (for example, implying promotions or shifts depend on sexual attention)

It can happen:

• in the workplace
• at work social events
• on business travel
• in online spaces connected to work (Teams, email, group chats)
• between employees, contractors, interns, or even involving customers/suppliers

One practical point: intent isn’t the whole story. The law looks at the effect on the recipient too. That’s why “I didn’t mean it like that” won’t necessarily protect your business if the conduct was unwanted and created an offensive environment.

What Are Your Legal Duties As An Employer In The UK?

In the UK, you have a duty to take sexual harassment at work seriously - both to comply with the law and to protect your people.

The Equality Act 2010 (And Vicarious Liability)

Under the Equality Act 2010, employees can bring claims in the Employment Tribunal for harassment. Importantly, employers can be vicariously liable for harassment committed by employees “in the course of employment”. That can include after-work drinks, conferences, and situations that are closely linked to work.

The key defence is showing you took all reasonable steps to prevent the harassment from happening. This is why policies, training, and prompt action matter so much - they’re not just “nice to have”, they’re part of your risk management.

The Proactive Duty To Prevent Sexual Harassment (From 26 October 2024)

From 26 October 2024, most employers also have a proactive legal duty to take reasonable steps to prevent sexual harassment of workers in the course of employment (introduced by the Worker Protection (Amendment of Equality Act 2010) Act 2023).

This doesn’t replace the existing rules - it strengthens the focus on prevention. If an Employment Tribunal upholds a sexual harassment claim and finds you breached this duty, it can increase compensation by up to 25%.

Health And Safety And Your Duty Of Care

Sexual harassment at work can also become a health and safety issue (stress-related illness, anxiety, and other impacts). Even outside discrimination law, employers generally owe a duty of care to employees.

Data Protection When Handling Complaints

Complaints and investigations involve personal data and, in many cases, special category data under the UK GDPR (for example, information about someone’s sex life, health impacts, or related disciplinary allegations). This means you need to handle information carefully, limit access, keep good records, and avoid gossip or informal “off the record” handling.

If you’re also dealing with CCTV footage, recordings, or device data as part of an investigation, make sure your approach is consistent with your broader workplace monitoring approach. For example, if your premises use monitoring, it’s worth ensuring your position is thought through and documented, including whether CCTV is lawful and proportionate in your circumstances.

What Policies And Documents Should You Have In Place (So You’re Protected From Day One)?

When it comes to preventing sexual harassment at work, your best friend is clarity. People are far less likely to cross lines (and far more likely to report concerns early) when expectations and reporting pathways are clear.

For most small businesses, a strong baseline includes:

1) A Clear Anti-Harassment Policy

This can sit inside a wider workplace policy framework, but it needs to be easy to find and easy to understand. A good policy should cover:

• what sexual harassment at work is (with practical examples)
• a statement of zero tolerance
• who the policy applies to (employees, contractors, interns, clients on-site, etc.)
• how someone can report concerns (including multiple reporting channels)
• what happens after a report is made
• confidentiality expectations (and realistic limits)
• potential outcomes (disciplinary action up to dismissal)
• support available to those involved

Many businesses incorporate this into a broader Workplace Policy set, so expectations are consistent across conduct, complaints, confidentiality, and investigations.

2) A Staff Handbook That Matches Reality

If you have a handbook, it should reflect what your business actually does - not what a generic template says. Tribunals and regulators often care about what happens in practice, not just what’s written down.

This is where a tailored Staff Handbook can help you document your standards and procedures in a way that fits your size and industry.

3) Employment Contracts With Behavioural Expectations

Your anti-harassment approach shouldn’t live only in a policy. It should be backed up in writing through your contracts and disciplinary rules.

In most cases, your Employment Contract should support your ability to investigate allegations, issue lawful management directions, and take disciplinary action where appropriate.

4) A Practical Reporting Path (Including For Small Teams)

Small businesses often have a tricky problem: what if the complaint is about the owner, a director, or the most senior manager on site?

Even if you’re small, consider building in:

• an alternate reporting contact (for example, another director or a trusted senior manager)
• an external reporting option (for example, a nominated HR consultant)
• a plan for independent investigations where needed

5) Training That’s More Than A Tick-Box

Training is one of the strongest ways to show you’ve taken “reasonable steps”. It doesn’t need to be over-engineered, but it should be regular, documented, and role-appropriate.

At a minimum, consider:

• induction training for new starters
• annual refreshers
• extra training for managers on handling complaints and avoiding retaliation
• training that covers customer/client harassment if your team are public-facing (hospitality, retail, care, etc.)

How Do You Handle A Sexual Harassment Complaint Fairly (Step-By-Step)?

If someone reports sexual harassment at work, it’s normal to feel anxious - especially if you’re worried about saying the wrong thing, upsetting your team, or being exposed to legal risk.

The safest approach is a calm, structured process that prioritises safety, fairness, and evidence.

Step 1: Take The Complaint Seriously And Act Promptly

Even if the complaint seems informal (“Can I just have a word?”), treat it as the start of a formal issue. Thank the person for raising it, avoid making promises you can’t keep (like absolute confidentiality), and explain the next steps.

Delays can increase risk. They can also make employees feel unsafe or ignored, which escalates issues quickly.

Step 2: Consider Immediate Safety Measures

Before you jump into interviews, consider whether you need to take interim steps to prevent further harm or conflict. For example:

• changing shift patterns or reporting lines
• moving desks/work areas
• temporary suspension on full pay (used carefully and proportionately)
• reminding all parties not to discuss the matter

Try to avoid “punishing” the person who raised the complaint (for example, by moving them to worse shifts). If changes are necessary, explain the reason and keep them as neutral as possible.

Step 3: Decide Whether This Is Grievance, Disciplinary, Or Both

Many complaints will be raised as a grievance, but may also require a disciplinary process if there’s alleged misconduct.

It helps to be consistent with your internal timelines and processes, including any grievance time limits you follow (whether contractual or policy-based).

Step 4: Run A Proper Workplace Investigation

For most sexual harassment at work complaints, you’ll need an investigation before you can reach a defensible outcome.

A fair investigation generally means:

• choosing an appropriate investigator (someone impartial, trained, and not involved)
• setting out the allegations clearly
• interviewing the complainant, the alleged harasser, and relevant witnesses
• gathering documents and evidence (messages, emails, rota data, CCTV if relevant)
• keeping detailed notes and a clear audit trail

For practical guidance on structuring this, it can help to align with a process like a Workplace Investigation approach, especially where you may later need to justify your decisions.

Step 5: Be Careful With Recordings, Messages And “Private” Evidence

Sometimes an employee will provide recorded conversations, screenshots, or messages from outside work hours.

Before relying on this, consider privacy and data handling. If you’re thinking about recording meetings yourself (or if you discover recordings exist), be cautious and get advice - the rules can be nuanced depending on context and purpose, including whether recording conversations is lawful and how that evidence should be handled in an employment process.

Step 6: Hold A Disciplinary Meeting If There’s A Case To Answer

If the investigation indicates there’s a case to answer, you’ll usually move into a disciplinary process. This should include:

• a written invite to the meeting and enough detail for the employee to respond
• the right to be accompanied where applicable
• a chance for the employee to give their version of events
• a reasoned decision based on evidence
• a written outcome and a right of appeal

Be consistent. If you treat similar misconduct differently across your business without good reason, you increase legal and employee relations risk.

Step 7: Communicate The Outcome Carefully

One of the hardest parts for small businesses is balancing transparency with confidentiality.

You may not be able to share detailed disciplinary outcomes, but you should still close the loop with the complainant. For example, you might confirm:

• you’ve investigated
• appropriate action has been taken under your policies
• what support is available
• what to do if issues continue

Step 8: Prevent Retaliation And Follow Up

After a complaint, the workplace can feel tense. That’s where follow-up matters.

Make it clear that retaliation (victimisation) won’t be tolerated. Check in with the complainant and relevant managers, and watch for:

• subtle bullying
• shift changes that disadvantage someone
• social exclusion
• performance management being used as a cover for payback

Following up is also a practical way to prove your business takes sexual harassment at work seriously - not just during the complaint, but afterwards too.

Common Mistakes Small Businesses Make (And How To Avoid Them)

Most businesses don’t get into trouble because they want to do the wrong thing. They get into trouble because they react too quickly, don’t document properly, or try to deal with serious issues informally.

Here are common pitfalls we see - and how to sidestep them.

1) Treating It As “Just Banter”

Workplace culture is set from the top. If leaders brush off inappropriate jokes or comments, your team will assume the behaviour is tolerated.

Instead: define the standard clearly, call out issues early, and make sure managers know how to respond.

2) Not Having A Clear Process (Or Not Following Your Own Process)

If your policy says you’ll investigate, then you need to investigate. If your handbook says you’ll keep records, you need to keep records.

Instead: keep your procedures simple, realistic, and consistent with your size.

3) Using The Wrong Person To Investigate

In a small business, it’s tempting to have the most senior person handle everything. But if they’re too close to the parties involved (or are perceived to be biased), the process can be undermined.

Instead: consider an impartial internal investigator, or bring in external help for sensitive complaints.

4) Over-Sharing Or Gossiping About The Complaint

Even well-meaning updates can become a privacy problem fast.

Instead: limit information to those who genuinely need to know, and remind managers about confidentiality.

5) Failing To Address Customer Or Third-Party Harassment

Sexual harassment at work isn’t always employee-on-employee. If a customer, client, supplier, or other third party harasses your staff, you should take it seriously and take reasonable steps to protect your team.

Legally, employers are often focused on vicarious liability for employees’ actions. While the Equality Act previously included a specific third-party harassment provision (now repealed), third-party harassment can still create legal risk in certain situations (including where the employer’s response is inadequate or where related claims arise), as well as major health and safety and reputational consequences.

Instead: document expected customer behaviour, empower staff to escalate issues, and support employees who set boundaries.

Key Takeaways

• Sexual harassment at work is unlawful under the Equality Act 2010 and can include comments, messages, unwanted attention, physical conduct, and behaviour that creates an intimidating or humiliating environment.
• As an employer, you can be legally responsible for harassment by employees in the course of employment - including work events and work-related communications.
• From 26 October 2024, employers also have a proactive legal duty to take reasonable steps to prevent sexual harassment of workers, and tribunals can uplift compensation by up to 25% where that duty is breached (in relevant cases).
• The best protection is prevention: clear policies, manager training, and reporting pathways that work in real life (especially in small teams).
• When a complaint is raised, act promptly, consider interim safety measures, investigate fairly, document everything, and run a proper disciplinary process where needed.
• Be careful with evidence like messages, CCTV, or recordings - privacy and data handling still apply during investigations.
• After the outcome, follow up to prevent retaliation and to rebuild a safe, respectful workplace culture.

If you’d like help putting the right workplace policies in place or managing a sensitive complaint fairly, you can reach us at 08081347754 or team@sprintlaw.co.uk for a free, no-obligations chat.