Under 5 Employees Doesn't Mean Under the Radar: Mental Health Responsibilities for Micro Businesses

If you run a micro business with fewer than five employees, you might think mental health obligations don't apply to you. After all, you don't have to document stress risk assessments, right?

Here's the uncomfortable truth: having under five employees is a paperwork exemption, not a duty of care exemption. And if something goes wrong, "we didn't have to write it down" won't protect you from prosecution or the moral weight of preventable harm.

The Legal Threshold vs Reality

Let's be clear about what the law actually says.

What you don't have to do: Businesses with fewer than five employees are exempt from the requirement to document their health and safety risk assessments, including stress risk assessments.

What you absolutely still have to do: You have the same legal duty of care under the Health and Safety at Work Act 1974 as every other employer in the UK. Section 2 requires you to ensure, so far as is reasonably practicable, the health, safety, and welfare of all your employees.

Mental health is health. Stress is a workplace hazard. The obligation exists whether you write it down or not.

The only difference is the paperwork. The responsibility? Identical.

The Network Business Model: Does Using Subcontractors Get You Off the Hook?

Many micro businesses operate with networks of self-employed staff or subcontractors rather than direct employees. It's a flexible model that works brilliantly for sectors like arboriculture, construction, and highways.

But here's the question: does using subcontractors absolve you of mental health responsibilities?

Short answer: No.

Your legal obligations extend to anyone working "under your direction or control," regardless of their employment status.

CDM 2015 Implications

For construction and arboriculture businesses, CDM 2015 is crystal clear: principal contractors have duties to coordinate and manage health and safety for everyone on site, including subcontractors. This includes:

• Providing adequate welfare facilities (which includes mental wellbeing support)
• Managing work pressures and demands
• Ensuring reasonable working hours
• Protecting workers from site-specific stress factors like isolation, time pressure, or unsafe conditions

You can't outsource your duty of care. If someone working under your control suffers work-related mental health harm, the fact they're self-employed won't shield you from liability.

Moral Responsibility vs Legal Compliance

Let's step away from the legal obligations for a moment and talk about what's right.

964,000 workers in the UK are currently suffering from work-related stress, depression, or anxiety. That's not a statistic; that's nearly a million people struggling to get through their working day.

Even if you're legally allowed to skip the documentation, should you? Consider this:

• Reputation: In tight labour markets, word spreads fast. A reputation for burning people out will cost you talent.
• Retention: Replacing skilled workers is expensive. Looking after their wellbeing from the start is cheaper than constant recruitment.
• Culture: The habits you build at micro scale become your company DNA.
• Sleep at night: If someone suffers preventable mental health harm, will "we didn't have to document it" help you live with that?

Building a sustainable business culture from day one isn't just good ethics. It's good business.

Prosecution Risk for Micro Businesses

"The HSE doesn't bother with small businesses." If you believe that, you're dangerously mistaken.

Recent prosecutions show the HSE enforces proportionately, not selectively:

• AP Tree Specialists Ltd (Derby): £20,000 fine after worker fell 30ft from MEWP
• Self-employed contractor Jason Hill: 12 months imprisonment after teenager died in fall during demolition works

The HSE doesn't check your headcount before deciding whether to prosecute. They check whether you met your duty of care.

What "Reasonably Practicable" Really Means

The legal standard is "reasonably practicable." This means balancing the level of risk against the time, trouble, and cost of controlling it.

For a micro business, "reasonably practicable" might not mean formal stress audits. But it absolutely means:

• Recognising when someone is struggling
• Having conversations about workload and pressure
• Taking action when warning signs appear
• Not creating unrealistic demands or unsafe working conditions

If something goes wrong and you have no documented approach, you'll struggle to demonstrate you did what was "reasonably practicable." The burden of proof shifts to you.

Practical Pros and Cons: The "Under 5" Exemption

Let's be balanced about this.

PROS of "Under 5" Status:

• ✅ Less administrative burden: No formal documentation requirement frees up time
• ✅ Flexibility: You can tailor your approach without rigid frameworks
• ✅ Lower compliance costs: No need for expensive consultancy or software
• ✅ Simplicity: Informal check-ins can be more effective than tick-box exercises

CONS of Relying on This Exemption:

• ❌ No paper trail: If an incident occurs, you'll struggle to prove you took action
• ❌ Harder to demonstrate "reasonably practicable": Without records, how do you show what you did?
• ❌ May miss early warning signs: Informal approaches can overlook patterns
• ❌ Sets poor precedent: When you grow to 5+ employees, you'll need to build systems from scratch
• ❌ Moral implications: Is "legal minimum" really where you want to set the bar?
• ❌ Subcontractors less protected: They may fall through the gaps entirely

The exemption is designed to reduce bureaucracy, not to eliminate responsibility.

The Subcontractor Question: Your Obligations When Workers Aren't "Yours"

This is where many micro businesses get it wrong. You might not employ someone directly, but if they're working under your control, you have duties.

Principal Contractor Duties Under CDM 2015

If you're the principal contractor (even on a small job), you must:

• Plan, manage, and monitor health and safety throughout the project
• Ensure adequate welfare facilities are provided
• Coordinate work to protect everyone on site
• Consult and engage with workers (including subcontractors)

"Adequate welfare facilities" isn't just toilets and tea breaks. It includes reasonable working hours, manageable workloads, protection from harassment or bullying, and support when things go wrong.

Site-Specific Stress Factors

Construction, arboriculture, and highways work come with unique mental health pressures:

• Isolation: Lone working or remote sites
• Time pressure: Tight deadlines, weather windows, traffic management constraints
• Physical demands: Exhaustion compounding mental strain
• High-risk environments: Constant vigilance creating psychological load
• Seasonal work: Financial insecurity during quiet periods

If you're directing subcontractors into these conditions, you're responsible for managing the associated risks, including mental health risks.

Practical Recommendations for Micro Businesses

You don't need a 50-page policy or an occupational health contract. You need practical, proportionate approaches that work for real businesses.

Simple, Proportionate Approaches:

1. Regular Check-Ins

Weekly or fortnightly conversations with your team/subcontractors. Ask: "How's the workload?" "Anything causing you stress?" "What support do you need?" Make it normal, not formal.

2. Visible Leadership

Be present on site or available remotely. Model healthy work-life boundaries. Don't glorify overwork or burnout.

3. Manage Demands

Set realistic deadlines. Don't overload people because "it's just a quick job." Plan for contingencies so pressure doesn't spiral.

4. Build Psychological Safety

Make it safe to say "I'm struggling" or "I need help." Respond supportively, not punitively. Follow through on commitments.

5. Toolbox Talks

Include mental health in your safety briefings. Normalise conversations about stress and pressure. Share resources (Samaritans, Construction Industry Helpline, mental health first aid).

When to Document (Even If Not Required)

Consider documenting when:

• You identify a specific stress risk (e.g., lone working, high-pressure project)
• Someone raises a concern about workload or mental health
• You implement changes to reduce stress (shows proactive management)
• A project involves particularly demanding conditions

It doesn't need to be formal. A simple note in your project file: "Discussed workload with [name] on [date]. Agreed to [action]." That's evidence of reasonable care.

Quick Wins That Don't Require Extensive Documentation:

• 🌿 Normalise mental health conversations in your daily interactions
• 🌿 Share helpline numbers in your site inductions or welcome packs
• 🌿 Check in after difficult projects or incidents
• 🌿 Encourage breaks and realistic working hours
• 🌿 Respond quickly when someone flags a problem

These cost nothing. They take minutes. They could save a life.

The Bottom Line

Let's strip away the complexity and get to the core truth.

Having under five employees is a documentation exemption, NOT a duty of care exemption.

If someone working under your direction suffers work-related mental health harm, "we didn't have to document it" will not protect you from:

• HSE prosecution
• Civil liability
• Moral responsibility
• Reputational damage
• The human cost of preventable suffering

The law recognises that micro businesses need flexibility, not a free pass to ignore mental health.

The Real Question

It's not "Do I legally have to do this?"

It's "What kind of business do I want to run?"

Do you want to be the business that treats people as disposable resources, operates at the absolute legal minimum, and hopes nothing goes wrong because you have no paper trail?

Or do you want to be the business that builds a reputation for looking after people, creates a culture where skilled workers want to stay, and sleeps soundly knowing you did the right thing?

Smart businesses build good practices from the start. Not because they have to, but because it's the foundation of sustainable growth.

What Now?

Take 10 minutes this week to assess your current approach:

• ✅ Do you have regular conversations about workload and stress with your team/subcontractors?
• ✅ Would you be able to demonstrate "reasonably practicable" measures if something went wrong?
• ✅ Are you creating conditions that protect mental health, or just hoping for the best?
• ✅ Does your approach align with your values, or just the legal minimum?

You don't need a perfect system. You need a genuine commitment to looking after the people who make your business work.

Because here's the truth: 964,000 workers are suffering right now. The question is whether anyone working with you will be one of them.

And that's a question only you can answer.