Last updated: July 2026
Your best salesperson is the most undervalued asset on your headcount. Most owners and GMs only find out what that person was worth on the day they hand in their notice.
This post answers one question. What does it actually cost to lose a proven building products salesperson in Australia, and why is that loss harder to recover than the headline recruitment fee suggests. It is a different question from the cost of hiring the wrong person. That is a separate event with separate maths, and I have written it up on its own. This is about losing someone who was already good.
I run sales recruitment for the Australian building products, lighting and architecture and design markets. I see who leaves, who stays, and what it takes a business to rebuild afterwards. The pattern is consistent enough to be worth setting down.
What does it cost to lose a proven salesperson?
More than the fee to replace them, and the extra sits in places most businesses never add up.
Rather than hand you a single headline number, here is what you can genuinely count when a good rep leaves, and how confident you can be in each line.
| Cost | What it is | How confidently you can count it |
|---|---|---|
| Recruitment cash cost | Advertising, screening and any agency fee to run the search again | High. These are real invoices. |
| Vacancy period | The weeks or months the area sits uncovered while you hire | High. You know the calendar. |
| Ramp salary | Full salary paid to a new starter before they reach the output of the person who left | Medium. The salary is known, the output gap is estimated. |
| Manager time | Hours your sales manager loses to interviewing, onboarding and covering the area | Medium. Real, and rarely tracked. |
| At-risk gross margin | The profit, not the revenue, on sales that slip or move to a competitor during the gap | Low to medium. Estimate the permanent portion honestly. |
| Live project exposure | Specifications the rep was holding warm that can cool or move while the seat is empty | Low. Real but hard to price. |
| Knowledge transfer risk | Product, technical and account knowledge that was never written down | Low. Real, and easy to underestimate. |
Two rules keep this honest.
Use margin, not revenue. A sale you miss costs you the profit on it, not the full sale price. Valuing lost revenue at face value overstates the damage badly.
Do not count the same month twice. The vacancy period and the ramp period run one after the other, so count the shortfall in each once. The same goes for lost pipeline and specification leakage, which often describe the same missing sale from two angles.
Rather than trust a range you read online, put your own package, area value and margin into the cost-of-a-bad-hire calculator. Most managers run it once and stop arguing about whether retention is worth funding.
How is losing a good rep different from making a bad hire?
They feel similar from the outside, because both end with a seat you have to fill. The cost behaves very differently.
A bad hire is money spent on someone who never reached the baseline. You are paying for output you did not get, plus the cost of starting again. Losing a proven performer is the opposite problem. You had the output, the relationships and the pipeline, and now you are trying to rebuild all three from a standing start while a competitor tries to pick them off.
The practical difference is what walks out with the person. A bad hire rarely takes much with them, because they never built much. A proven rep leaves with live specifications, warm accounts and a reputation that opened doors. That is why the recovery is slower and the exposure is larger. I keep the two events on separate pages for that reason. The cost of a bad sales hire in building products has the full worked model for the hiring mistake.
What makes a salesperson worth protecting?
Raw revenue is the obvious measure and the incomplete one.
The best people in this market contribute well beyond their own number. They train and steady the reps around them. They carry industry knowledge and specialist product understanding that took years to build. They feed product and marketing decisions with what they hear in the field. When one of them leaves, you feel the gap in all of those places at once, not only in the sales report.
A useful test for a GM is simple. If this person left tomorrow, how many parts of the business would feel it. If the answer is only the territory number, you have a good biller worth keeping. If the answer is the territory, the newer reps, the product roadmap and your read on the market, you have a top performer, and the cost of losing them is spread across all of it.
Why is the loss bigger in specification-led building products?
Because the pool is small, the relationships are personal, and the sales cycle is long.
The people selling into specification in this country are a small, ageing and geographically concentrated group. The occupation data from Jobs and Skills Australia points the same way every time I look at it. The bench behind your top performer is thinner than most businesses assume, and thinner again outside Sydney and Melbourne.
Then there is the nature of the work.
Specifier relationships are personal. A rep is trusted by name by the architects, builders and consultants who decide what gets specified. That trust belongs more to the person than to the logo on the card.
Cycles are long. A specification can sit for well over a year before it converts to a sale, and someone has to hold it warm the whole way through. When the rep holding it leaves, the specification can cool or move before a replacement even knows it exists.
The knowledge is tacit. Reading a compliance requirement, advising on a detail, solving a problem on site. You do not get that out of someone's head and into a CRM in a fortnight.
The economic consequence of that leakage is the point here. For how specifications actually get lost and defended, I have written a separate piece on specification leakage in building products.
What actually gets lost when a strong rep leaves?
I want to be honest about the evidence. I cannot hand you one clean case where a business measured exactly what a departure cost over the following year. What I can tell you, from a lot of conversations across this market, is that the disruption is real and it lands in the places above at the same time. Accounts wobble, live specifications go quiet, the team feels it, and the area takes far longer to get back to where it was than anyone budgeted for.
One factor sits underneath a lot of these losses, and it is worth pulling out. How much of the rep's week was actually spent selling.
I have watched two salespeople in the same market look completely different for reasons that had nothing to do with ability. One spent their days buried in service problems, quoting, order chasing and warranty issues. The other was supported to sell. A heavy service load does more than slow a number down. It keeps a salesperson on low-value tasks instead of in front of customers, which caps the budget they can reach and the commission they can earn, and it wears down the part of the job they actually enjoy. That combination hits performance, earnings and how long they stay, all at once. The quietest flight risk on a team is often the one whose number still looks fine. The A&D side of this shows up in why your best A&D reps are leaving.
Do counter-offers keep a top salesperson?
Sometimes, and only when they change the thing that was actually wrong.
The best Australian read on the raw odds comes from Robert Half. Their research on counter-offers found that around half of the people who accept one have left within a year anyway. Treat that as a caution rather than a law. What it tells you is that matching the money, on its own, tends to buy a delay rather than a decision.
The reason is straightforward. Money is rarely the real cause when a good person resigns. It is the easiest cause to say out loud. Underneath it is usually the manager, the lack of progression, the workload, or a comp plan that caps or claws back the reward for outsized work. If you cap your best performer's earnings, they notice, and I have watched that push people to start looking inside a quarter. There is more on this in what your commission structure actually pays.
The counter-offers I have seen genuinely work share one feature. The employer identified the real reason, changed it materially, and then followed through.
Two examples, both with the details removed. In a design-sector business, a key person had a team built around them and was weighing an exit. The employer made substantial commitments to keep them and then delivered on them. That person has stayed three to four years since, and the business has gone on to become one of the larger operators in its niche. A pay rise may have been part of it, but the lasting change was the company keeping its broader word. In another case, the person accepted a four-day week, because work-life balance was the actual issue. The offer held because it solved the real problem instead of papering over it with salary.
None of this makes a counter-offer a good default. It makes it a late intervention that occasionally works when it stops being about the money.
What to do before the resignation, not after
The cheapest version of this whole problem is the conversation you have six months before the notice, rather than six hours after it.
That is a craft of its own, and I have set it out in full elsewhere. If you want the practical playbook, the stay conversations, the early signals and the levers ranked by what they return, read the eight-lever retention blueprint. This post is the business case for why that work is worth funding. That post is how you do it.
The short version. Know who your two or three genuinely hard-to-replace people are. Understand what would make each of them stay another three years, in their own words. Then fix one real thing before the market fixes it for you.
A note for candidates weighing a counter-offer
This is written mainly for the people doing the hiring, but the other side of the desk deserves a straight answer.
If you have resigned and a counter-offer has landed, the question is not whether the money is good. It is whether the reason you were leaving has actually changed. The manager, the area, the progression, the workload. If the employer has genuinely addressed the real issue and you believe they will follow through, staying can be the right call. If nothing has changed except the number on your payslip, the odds say you will be back here within a year. Have the harder conversation about what was actually wrong, not the easier one about pay.
Where these numbers come from
The counter-offer odds are from Robert Half Australia's research. Check the current release for the exact figure, survey population and date before quoting it precisely.
The recognition research most worth reading is the Gallup and Workhuman work on high-quality recognition and staff turnover.
The occupation picture for building products sales comes from Jobs and Skills Australia. Treat the specific counts as needing the latest release.
The ramp figures are from my own survey of people working in Australian building products sales, which is an industry-opinion survey rather than a controlled study.
The observations about counter-offers, service workload and what a top performer contributes are my own, from recruiting in this market. Last reviewed July 2026.
If you want to know what an exposed top performer would actually cost you, run your own figures through the cost-of-a-bad-hire calculator. If the number worries you, that is usually the moment to test your retention risk, your succession depth, or a confidential replacement search before you need one. Happy to talk any of those through.
James