You want to make the case for the thing you know the business needs: a proper HRIS instead of the spreadsheet held together with hope, another two people so your team stops running on fumes, a wellbeing programme that isn't a fruit bowl and a poster in the kitchen.
You've explained why it matters. And the CFO looks up and asks the only question that was ever going to decide it: "What's the return?"
HR has spent decades being asked to argue for its worth in a language nobody ever handed it the vocabulary for: the language of dollars, risk and return that every other function speaks fluently before it walks in the door.
Marketing brings attribution. Sales brings pipeline. Operations brings unit costs. HR brings a deeply-held belief that people matter, and hopes that's enough.
In ANZ right now, that argument has never been easier to win. Because the last three years of legislation have turned "people risk" into a hard-dollar, board-level liability.
The business case for HR investment is sitting there waiting to be made. You just need to know which numbers to bring to the table. ⬇️
For years, the weakness in HR business cases was that the downside was fuzzy.
"If we don't do this, engagement might dip and we might lose some good people eventually" doesn't move a board that's weighing your ask against a warehouse upgrade with a clean payback figure.
The cost of doing nothing was real, but it was soft, and soft costs lose to hard ones. But that's not the world ANZ HR operates in anymore.
Look at what's landed on your desk in a remarkably short stretch:
Cross the Tasman and the specifics change but the logic doesn't.
New Zealand's Holidays Act has been a payroll-compliance minefield for years: the remediation bills handed to employers who got holiday-pay calculations wrong have run into serious money, and reform has been grinding through the system.
If you want a single, unanswerable argument in a New Zealand boardroom for why manual payroll is a false economy, the Holidays Act is it.
Stack all of that up and a pattern jumps out.
Every one of these is a compliance obligation you can't opt out of, and almost every one of them is impossible to meet properly without decent workforce data and the systems to produce it.
HR naturally reasons in outcomes: engagement, culture, capability, wellbeing.
Boards reason in three currencies: money made, money saved, and money at risk.
A business case for HR investment fails not because the outcomes aren't real, but because they never get converted into one of those three currencies.
❌ "This programme will improve engagement" is an outcome.
✅ "Our regrettable turnover is costing us roughly $1.4 million a year, and this programme targets the two drivers our exit data says are behind most of it" is money saved.
So the whole task of building an HR business case comes down to a single translation habit: for every people outcome you care about, find the money made, money saved, or money at risk sitting underneath it, and lead with that.
Which brings us to the numbers themselves. ⬇️
HR is drowning in things it can measure – training hours delivered, policies published, tickets closed – most of which tell a board nothing, because they measure activity rather than outcome.
The HR metrics that build a business case are the ones that translate cleanly into one of those three currencies. Group them by what they prove, not by which HR textbook chapter they came from.
Sit down and total the hours your team spends re-keying data, chasing approvals and correcting payroll, put a wage against it, and you often have a business case before you've mentioned a single strategic benefit.
Distinguish voluntary from involuntary turnover, and both from regrettable turnover; the good people you didn't want to lose. That last one is what a board actually cares about, and it's where the cost lives.
Pair it with first-year attrition (a brutal signal about your hiring and onboarding) and average tenure. The dollar figure that comes out of this (the cost of employee turnover) is usually the most persuasive number.
Revenue per employee and profit per employee are numbers a CFO already lives by, and framing HR investment in terms of lifting them speaks directly to their world.
Labour cost as a percentage of revenue tells you whether your workforce spend is trending the right way. And for the finance-literate room, human capital ROI – revenue minus operating costs (excluding people costs), divided by total people costs – expresses the return the organisation gets on every dollar it spends on its workforce.
A business case for HR investment isn't a document you write in one sitting. It's an argument you assemble, in an order that finance instinctively trusts.
❌ HR investment framed as "help the HR team" loses every time.
✅ Framed as "de-risk the scaling plan you've already approved," or "close the compliance gap that's now a director liability," or "protect the margin you promised the investors" – that wins, because you've attached your ask to a priority the room already cares about.
Find the strategic goal your investment protects, and make that the headline.
Pull the current-state numbers.
Where a number doesn't exist, don't paper over it; surface the gap, because the absence of the data is evidence for the very investment you're proposing.
This is the emotional and financial core of the whole case, and it's where the ANZ compliance environment does your heavy lifting.
Put a dollar figure on what not investing costs: the turnover you'll keep absorbing, the compliance exposure you're carrying, the admin hours you're burning.
Boards move faster to avoid a quantified loss than to chase an equivalent gain, so lead with the loss.
Return on investment is (gain minus cost) divided by cost.
Add a payback period – "this pays for itself in nine months" is a sentence CFOs remember.
For anything multi-year, run a simple net present value using the organisation's own discount rate; borrowing finance's conventions signals you've done your homework in their language, not yours.
Present a good / better / best.
This reframes the decision from "yes or no to HR's request" (which invites a no) to "which option", which assumes a yes. It also anchors the board away from the "do nothing" option they'd otherwise default to.
Name, up front, the leading and lagging indicators you'll report against and when.
This pre-empts the question every CFO is holding in reserve: "how will we know it worked?" Answering it before it's asked is worth more than another slide of benefits.
The CFO's entire job is to find the hole in your case. Find it first.
A business case that openly states "this assumes we hold headcount flat" earns far more trust than one that pretends there are no assumptions, because the moment they find one you didn't disclose, they stop believing the rest.
The cost of replacing someone isn't their recruitment fee. It's the whole chain:
Recruitment-industry and academic estimates of the total commonly land anywhere from around half an annual salary for a junior role to well over 100% for senior or specialist positions, depending on how hard the role is to fill and how long it takes someone to become fully effective.
Rather than borrow a percentage from a study of a different labour market, build the number from your own inputs:
Cost of turnover = number of regrettable exits per year × average cost per exit
where cost per exit ≈ recruitment cost + onboarding and training cost + (days to fill × daily value of the role) + (ramp-up weeks × proportion of output not yet delivered × weekly value of the role) + estimated knowledge-loss cost.
Run it once with your real figures and the result is almost always larger. That number, sitting next to the cost of the retention programme that targets it, is the most persuasive slide you will build.
Do the same transparent maths for the other inaction costs.
Compliance exposure: potential penalty or remediation cost × your honest estimate of likelihood, across payroll accuracy, psychosocial duties and pay-equity obligations.
Manual admin: hours per pay cycle × cycles per year × loaded hourly cost, across the whole team.
Absenteeism: absence days above your industry benchmark × average daily wage cost.
Every HR business case meets the same handful of objections. Prepare for them and they stop being ambushes.
Reframe it as risk management with a board-level dollar value.
Wage-theft criminalisation, the positive duty and the psychosocial hazard regime have turned people risk into quantifiable, director-level exposure – and managing that exposure is not a cost, it's insurance the board is legally obliged to buy.
You don't need certainty; you need a defensible model, external benchmarks, and a phased pilot with a measurement plan.
Offer to run the investment as a pilot on one business unit, measure against a comparable unit that doesn't get it, and report the difference. Certainty isn't the standard finance applies to any other investment either, a credible, testable estimate is.
Quantify the manual tax and put the compliance failure risk next to it. The Holidays Act remediation bills and the wage-underpayment scandals are the evidence, sitting in the public record, that manual processes don't scale and (more to the point) don't stay legal.
The cost of inaction rises the longer you wait, and several of these obligations carry legislated deadlines that don't care about your budget cycle.
Payday super and the right to disconnect aren't discretionary spend you can defer to a better quarter; they're compliance dates with your name on them.
Go back to that budget meeting, and the silence after "What's the return?"
That silence is never really about whether HR matters. Everyone in that room already knows the business is its people; they've said as much in the annual report. The silence is about translation, about HR being the one function that turned up to a conversation in dollars carrying a story in something else.
The reforms of the last few years have handed ANZ HR the missing dictionary.
➡️ People risk is now measured, legislated and, in the sharpest cases, criminal. The cost of losing your good people can be calculated to the dollar. The compliance exposure of doing nothing sits there in the public record with a figure attached. You don't have to argue that people matter anymore. You have to show the board the maths; and the maths, for once, is firmly on your side.
So build the number. Bring the receipts. And the next time the room goes quiet after someone asks about the return, let it be because the CFO is the one doing the sums, and realising they can't afford not to say yes.
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