There is a widely repeated rule that a business needs HR at around ten to fifteen employees. It is a reasonable prompt and a poor rule, because headcount is not what creates the need. Complexity is. Plenty of six-person businesses have more HR risk than a twenty-person one, and the difference is usually what kind of work they do and how their people are engaged.
The moments that actually change the answer
Your first employee. Not your first ten. The first hire is where award coverage, a compliant contract, superannuation, payroll setup, record-keeping and workers’ compensation all arrive at once. Getting this right at hire one is inexpensive; unwinding four years of a wrong classification is not.
You cross fifteen employees. This one really is a threshold. You lose the small business exemptions: the unfair dismissal qualifying period drops from twelve months to six, and NES redundancy pay starts to apply. The headcount includes regular and systematic casuals and associated entities, so businesses cross it earlier than they expect.
You start using casuals or contractors at scale. Both areas changed significantly in 2024 and both carry the sort of misclassification risk that compounds quietly. See casual employment and employee vs contractor.
You move to salaries for award-covered roles. The moment a salary is meant to absorb penalties and overtime, you need a defensible arrangement and a reconciliation. This is the single most common source of large back-pay figures in small business.
You are about to manage someone out. The cheapest advice you will ever buy is the hour before the conversation, not the week after the claim.
You are selling, merging or bringing in an investor. Employment liabilities surface in due diligence, and an unquantified underpayment exposure has a way of coming straight off the price.
Nobody owns it. If HR questions currently land on the founder between other jobs, they are being answered quickly rather than correctly, and nobody is checking the answers.
What support usually looks like
It rarely means hiring an HR manager. For most small businesses the practical options are:
- A one-off review. Someone works through award coverage, pay rates, super, entitlements and records, and hands you a prioritised list of what to fix. Finite scope, finite cost, and it tells you whether you have a problem before you spend money assuming you do.
- A setup project. Contracts, policies, position descriptions and onboarding built once, properly, for how your business actually runs — rather than templates that half fit.
- Ongoing access. Someone to call when a question comes up, which is what most owners actually want. The value here is less about the big projects and more about not having to guess on a Tuesday afternoon.
How to tell whether you need it right now
Three questions:
- Can you name the award and classification for every employee, and say why?
- If an employee asked for their pay records for the last three years, could you produce them this week?
- If your best employee resigned tomorrow and queried their entitlements, are you confident the numbers are right?
Three yeses and you are in good shape — keep doing what you are doing. Any no is not a crisis, but it is a gap you now know about, and gaps you know about are much cheaper than the other kind.
If you would like a straightforward view of where your business currently stands, a Payroll Health Check is designed for exactly that: a defined piece of work with a clear output, and no obligation beyond it.