Do I Need HR If I Have Under 20 Employees?

Short answer: You probably don’t need a full-time HR employee under 20 employees—but that doesn’t mean you don’t need HR support. The biggest compliance mistakes and employee issues rarely happen at employee #5. They tend to appear around employee #12–18, when the business is growing quickly and HR becomes everyone’s part-time job.

This guide breaks down what actually changes as your headcount grows, which laws kick in at specific thresholds, and how to tell if you’re already past the point where you need support — even if you don’t need a full-time hire.

The Real Answer: It Depends on What “HR” Means to You

When founders ask this question, they’re usually really asking one of three different things:

Do I have a legal requirement to have HR staff? (Almost never, at this size.)
Am I currently exposed to compliance or legal risk? (Very possibly, yes.)
Would having HR support save me time and prevent problems? (Almost certainly.)

Let’s take these one at a time.

Legal Requirements vs. Practical Needs

Very few U.S. employment laws require you to have a dedicated HR employee, regardless of company size. What the law does require, often starting at surprisingly low headcounts, are specific policies, postings, and processes — things like:

Anti-discrimination protections (many kick in at 15 employees under federal law — Title VII, ADA)
Family and medical leave (some state laws apply well under 50 employees, unlike the federal FMLA threshold)
Workers’ compensation insurance (required in most states starting at just 1 employee)
Final paycheck and termination rules (vary significantly by state, and apply regardless of headcount)
Harassment prevention training (mandatory in several states at low employee counts, like California and New York)

Here’s what surprises most founders:

Compliance obligations often begin long before it makes financial sense to hire an HR manager. Even if you don’t have an HR department, someone in your business is still responsible for getting HR right.

What Typically Breaks Down Under 20 Employees

If you’re currently handling HR yourself (or it’s split between you, a co-founder, and whoever’s “good with people”), here’s where things usually go wrong first:

No documented policies.
Inconsistent performance management.
State-by-state compliance blind spots.
Founder time drain.
No one owns compliance.

Inconsistent handling of performance issues. Without a clear process, difficult conversations get delayed, documentation is thin, and terminations become legally risky because there’s no paper trail showing the issue was addressed fairly.

State-by-state blind spots. If you have even one remote employee in a different state, you may be subject to that state’s employment laws — not just the state where your company is registered.

Founder time drain. HR-adjacent tasks (benefits questions, payroll issues, conflict between two employees, “am I allowed to fire this person”) pull founders away from the business, often at exactly the moment the company needs their full attention elsewhere.

No one owns compliance. Someone has to track changing state and federal requirements. At a 10-15 person company, that’s rarely anyone’s actual job — which means it’s no one’s job.

When Do Most Companies Need HR Support?

There’s no universal rule, but this is a reasonable framework founders can use to think about it:

1–10 employees: You can likely manage with basic tools (an employee handbook template, a payroll provider with built-in compliance features, and occasional legal review). Risk is present but usually manageable.

10–20 employees: The HR danger zone. This is where most founders begin feeling the strain. You’re hiring quickly, managers are making people decisions, and employment laws are becoming more relevant—but a full-time HR hire still feels out of reach.

20+ employees: Most companies start feeling real pain without dedicated HR support around this range — multiple state jurisdictions, more complex benefits decisions, a performance management system, and enough employee relations issues that founder bandwidth becomes the bottleneck. This doesn’t necessarily mean it’s time for a full-time hire, though — many companies well past this stage continue to rely on fractional HR precisely because it scales with them, handling increasingly complex needs without the overhead of a full internal department.

Signs You Need HR Support Now, Regardless of Headcount

Headcount is a useful proxy, but it’s not the only signal. You likely need HR support sooner than “someday” if:

You’ve had (or are worried about) an employee complaint, harassment issue, or termination dispute
You have employees working remotely in multiple states
You don’t have an employee handbook, or it hasn’t been updated since you wrote it
You’re not confident you’re classifying employees vs. contractors correctly
You’re about to raise a round, get acquired, or go through diligence (buyers and investors will ask about HR practices)
A founder or ops person is currently “figuring it out” via Google when issues come up

If two or more of these are true, the cost of not having HR support is probably already higher than the cost of getting it.

Full-Time HR vs. Fractional HR vs. Doing It Yourself

This is really the practical decision founders face once they’ve answered “do I need HR” — and it’s worth noting upfront that this isn’t purely a company-size decision. It’s a “what does my business actually need right now” decision.

Doing it yourself works if you’re under 10 employees, have simple, single-state operations, and are willing to invest time staying current on compliance.

A full-time HR hire makes sense when you need a dedicated person embedded in the business every day — and when that need is broad enough and constant enough to justify a full-time salary, benefits, and management overhead.

Fractional HR is often assumed to be a stopgap for companies “too small” for full-time HR — but that’s not really how it works in practice. Plenty of larger, well-established companies use fractional HR deliberately, and for good reason:

Specialized expertise on demand. A compliance audit, a compensation restructure, or a leadership transition doesn’t require a full-time headcount — it requires the right expertise for a defined period.
Coverage during transitions. Companies between HR leaders, scaling into new states or countries, or going through M&A often bring in fractional HR to keep things running smoothly without rushing a permanent hire.
Cost efficiency at any size. Even a 100-person company may not need a full-time VP of HR salary if the work can be handled expertly on a fractional basis — the savings scale with the org, not just for startups.
Objective, outside perspective. Fractional HR partners often catch blind spots that internal teams miss, simply because they’re not entangled in company politics or history.

In short: fractional HR isn’t just “HR for companies that can’t afford full-time yet.” It’s a flexible model that works whether you’re 8 employees or 800 — the right fit depends on the complexity and consistency of the HR work you need, not just your headcount.

The Bottom Line

The question isn’t whether you have enough employees to justify HR.

The better question is whether your business has enough people—and enough complexity—that HR mistakes would be expensive.

For many companies, that answer arrives well before employee #20.

If you’re not sure where you currently stand, a quick HR audit is usually the fastest way to find out — it’ll tell you exactly what’s missing, what’s urgent, and what can wait.

Not sure if you’re exposed? Book a free HR risk assessment