When Should a Startup Hire Its First HR Person?
Most founders get this wrong in one of two ways.
They hire HR too early — bringing in a generalist at 15 people when what they actually need is a great office manager and a solid employment lawyer on retainer. Or they wait far too long, and HR becomes the person who processes terminations, rewrites job descriptions mid-crisis, and rebuilds comp bands after three high performers quit in a month because the pay structure stopped making sense.
Neither is a good outcome. One wastes money. The other costs you people you couldn't afford to lose.
So when is the right time? Here's a straight answer, grounded in what we've seen across thousands of HR leaders in the TPPG community.
The honest answer: it depends on three things, not headcount
Headcount matters, but it's a lazy proxy. The better questions are:
1. Are people decisions becoming a distraction for your founders or managers?
At early stage, the CEO typically handles hiring. That works until it doesn't. The signal isn't headcount — it's how many hours per week your senior people are spending on interviews, comp decisions, offer letters, and conflict resolution. When that number hits double digits, you have an HR problem whether you acknowledge it or not.
2. Are you about to scale, or already scaling?
There's a meaningful difference between needing HR infrastructure and needing HR capacity. A 30-person company that's about to hire 30 more in six months has a different problem than a 30-person company that's been stable for two years. The former needs someone in place before the growth hits. The latter might be fine a while longer.
3. What does your risk profile look like?
Remote employees in multiple provinces or states. Contractor-to-employee reclassification risk. A performance issue that's been managed informally for too long. Pay equity questions you've been deferring. These aren't headcount-driven — they're driven by complexity. One employment lawyer bill or wrongful dismissal claim can cost more than a year of a mid-level People Ops salary.
What the data actually shows
In conversations across thousands of People leaders in the TPPG community — from pre-revenue startups to post-IPO scale-ups — a few patterns repeat consistently.
The most common first HR hire happens between 40 and 80 employees. This is where the operational load becomes undeniable: onboarding breaks down, performance conversations start happening informally (and inconsistently), and comp decisions get made ad hoc in ways that create problems later.
Series A is the most common trigger event — not because the funding creates an HR need, but because Series A usually comes with a hiring plan. Founders who just raised and are planning to double headcount in 18 months need HR infrastructure before the growth, not after it.
But companies wait. In the TPPG community, it's common to hear from People leaders who joined as employee 50, 60, or even 80 — and are now the only HR person trying to rebuild systems that were never built in the first place. The workload is brutal. One member described being the solo HR lead at a fast-scaling company: handling recruitment, onboarding, performance, payroll queries, compliance, and culture programs simultaneously. It's not sustainable, and the quality of each individually suffers.
Pre-Series A, fractional is underused. A number of community members running People functions at early-stage companies have started fractional or contract arrangements — covering 2–3 days per week — rather than a full hire. It's becoming more common. The benefit: you get senior-level judgment on things like comp philosophy, employment contracts, and your first termination without paying a full-time salary during a period when the work doesn't yet justify it.
The headcount thresholds that actually matter
If you need a rough number: 25 to 30 employees is when most companies start feeling the need, even if they don't act on it yet. This is consistent with what HR leaders in the community report repeatedly. At this size:
You're likely hiring at least a few roles per quarter
Onboarding is happening often enough to need a repeatable process
Performance conversations are starting to require documentation
You may have employees in multiple locations with different employment standards
50 employees is where inaction starts to become genuinely costly. By this point, you likely have:
A payroll system that isn't fully integrated with your HRIS (or you don't have an HRIS at all)
Comp bands that were last updated 18 months ago
A few managers having hard conversations with no training or framework
At least one compliance gap you don't know about yet
100+ employees without dedicated HR is a liability, not a cost saving. At this size, employment law complexity, team structure, and the pace of decisions means something will eventually break — and the cost of fixing it after the fact is always higher than building it right.
The trap: hiring too junior, too early
A common mistake: hiring a coordinator or HR administrator as the first HR person because it's cheaper, then realizing the role needs strategic judgment that the person doesn't have.
The first HR hire at a startup is almost never just administrative. They need to:
Set the comp philosophy, not just run payroll
Build the performance management process, not just administer it
Handle your first difficult termination with the right documentation and appropriate notice
Know when to bring in employment legal counsel (and when not to)
Advise founders on decisions, not just execute them
An HR coordinator is a valuable hire on a team of five. As the first and only HR person at 50 employees, the role almost always requires someone with at least five to eight years of experience — someone who has seen what breaks and knows how to prevent it.
That said: you don't always need that person full-time.
What to do if you're not ready for a full-time hire
If you're between 20 and 50 people and the work doesn't justify a full-time hire yet, you have three real options:
1. Keep it with the founder — works if your volume is genuinely low and your complexity is low. Breaks down as soon as either of those change.
2. Add it to an office manager or operations role — common at 20–30 people. Works for the administrative pieces. Fails when you hit your first difficult performance issue, your first comp review, or your first person in a different province asking about their entitlements.
3. Hire a fractional HR leader — 1–3 days a week of senior People expertise, without the full-time salary. You get someone who has built this before, can handle your immediate problems, and can help you decide when (and who) your full-time hire should be.
The fractional model is particularly valuable at the inflection point: when the work clearly needs to happen, but the volume doesn't justify five days a week yet. It also works well post-layoff, when you've reduced your HR team and need continuity while you stabilize.
The questions worth asking before you hire
Before posting a job description, get clear on these:
What does the first six months actually look like? If it's mostly onboarding and admin, you may want a coordinator. If it's building your comp philosophy, running your first performance cycle, and handling a messy departure, you need someone senior.
Is this a generalist role or a specialist role? At sub-100 headcount, the answer is almost always generalist. Recruiting specialists, L&D leads, and DEI program managers are second or third hires, not first.
What does the reporting line look like? HR leaders who report into Finance or Operations tend to trend operational. HR leaders with a direct line to the CEO tend to be more strategic. The reporting structure will shape the role regardless of what the job description says.
What's your growth plan? Hire for where you'll be in 18 months, not where you are today. Someone capable of running HR at 50 people needs to be capable of running it at 150.
The cost of waiting
It's worth being direct about this: the cost of waiting too long is usually invisible until it isn't.
You won't see a line item for "cost of not having HR." What you'll see is higher-than-expected voluntary attrition, a performance problem that dragged on for six months longer than it should have, a hiring process that takes 30% longer than your competitors, and an offer accepted by the candidate you really wanted — at another company — while yours was still getting approved internally.
The companies that build People infrastructure early are measurably better at retaining the people they worked hard to hire. That's the ROI.
The bottom line
There's no universal headcount trigger. But if you're past 40 employees and HR is either absent or absorbed into another role, it's worth an honest assessment of the risk you're carrying.
Most founders who hire HR late don't regret having done it. They regret not doing it sooner.
Not sure whether you need a full-time hire or something more flexible? The People People Network places fractional HR and TA leaders — vetted through the TPPG community — into startups and scale-ups across Canada and the US. Most matches happen within 72 hours.
