The Hidden Cost of Labour Inefficiency | Speaking Numbers

If you sell materials.

And a job gets cancelled.

The timber or the parts sit in the warehouse.

They keep their value.

You can sell them next week.

But if you sell labour.

Whether it’s your own or your team’s.

You are dealing with a perishable asset.

An hour of labour is like a carton of milk.

It has an expiry date.

If you don't sell that hour today.

It’s gone forever.

You still paid for it in wages, super, holiday and sick leave accrual.

But you can never get the revenue back.

The Invisible Leak

You likely check your Wages line in Xero every month.

It’s usually the biggest number on the page.

But there is a deeper number hiding behind it.

Your Labour Efficiency.

This is the gap between the hours you buy from your team.

And the hours you sell to your clients.

If you pay an employee for 38 hours a week.

But your invoices only show 22 hours of billable time.

You have a 16-hour leak.

At $130/hr.

That’s $2,080 a week walking out the door.

That’s $108,160 a year in potential profit that simply evaporated.

Where Does the Time Go?

When a business is flat out.

But the cash isn't showing up.

The leak is usually found in three specific places.

1. The Driveway-to-Driveway Trap.

Paying for travel time that isn't built into the hourly rate or quote.

2. The Quick Favour Culture.

Doing small extra tasks for clients that never make it onto the invoice.

3. The Admin Bloat.

A skilled team spending 25% of their day chasing parts or filling out paperwork instead of doing the work they are paid for.

The Benchmarks by Business Type

Labour efficiency varies depending on how your work is structured.

Here is how the percentages usually break down.

1. Service & Maintenance (High Volume)

· Benchmark: 60% – 70%

· Why: These businesses have multiple stops per day. A technician doing 5-6 small jobs will spend significantly more time in traffic and doing paperwork than a builder on a site all day.

· The Risk: If efficiency drops below 60%, the travel cost usually eats the entire profit margin of the labour.

2. Project & Contract Work (Long Duration)

· Benchmark: 80% – 90%

· Why: If your team is on the same site for 3 days or 3 weeks, travel is minimised. They arrive, they work, they leave.

· The Risk: Efficiency here is often lost through rework or waiting for materials rather than travel.

3. The Danger Zone

· Benchmark: Below 60%

· The Reality: If your team is billing less than 5 hours in an 8-hour day, your pricing must be significantly higher to compensate, or you are likely losing money on every staff member you employ.

Why 100% is a Dangerous Goal

It is tempting to try and push for 90% or 100% efficiency, but this often backfires.

· Burnout: Staff feel watched and micro-managed.

· Safety & Quality: When people rush to stay billable, they stop cleaning their tools, skip safety checks, and make mistakes that lead to unpaid rework.

· Admin Backlog: If a tech is 100% billable, when do they do their timesheets or job notes? Usually, they don't, which leads to billing leaks later.

Price for Reality - The Real Hourly Rate Exercise

If you calculate your pricing based on a 38-hour work week.

You are already losing money.

You cannot hustle your way out of bad math.

Stop guessing and run the numbers for one employee or yourself.

Step 1: Find the Total Cost to Exist

Add up what it costs to have that person on the road for one week (Gross Wages, Super, Leave accruals, WorkCover, Vehicle, and a share of overheads).

Example: Let’s say the total cost is $2,500 per week.

Step 2: Determine the Real Billable Hours

Look at the last month of invoices. How many hours were actually charged to a client?

Example: Your data shows they average 26 billable hours per week (approx. 70% efficiency).

Step 3: Do the Breakeven Math

Divide the Total Cost by the Real Billable Hours.

$2,500 ÷ 26 hours = $96.15 per hour.
This is your Breakeven Rate.
If you charge $95 an hour, you are losing money every time they turn the key in the ignition.

Step 4: Add the Profit (The Margin Math)

Your business doesn't exist just to break even.

You need a margin for profit.

If you want a 30% Net Profit Margin, you must divide your breakeven rate by 0.7.

$96.15 ÷ 0.7 = $137.35 per hour.

Why does dividing make the number bigger?

It’s the difference between Markup and Margin.

Here is why we do it this way.

1. The Whole Pie Logic

Think of the final price you charge the customer as a 100% whole pie.

If you want a 30% Profit Margin.

That means 30% of the pie is Profit.

And 70% of the pie is Cost.

If your cost is $96.15.

We need to find out what the 100% (the whole pie) is.

To find the whole when you only have a part.

You divide by the percentage.

$96.15 ÷ 0.70 = $137.35.

2. The "Markup Trap" (Why we don't just multiply)

Most people make the mistake of using Markup.

They take their cost and add 30%.

$96.15 x 1.30 = $125.00.

It looks right.

But look what happens when you check the math.

You charge the client $125.00.

Your cost was $96.15.

Your actual profit is $28.85.

$28.85 ÷ $125.00 = 23% Profit.

You thought you were making 30%.

But you’re actually only making 23%.

That 7% difference is where businesses lose their safety net.

3. Why the number gets bigger

When you divide by a number smaller than 1.

The result always gets bigger.

Think of it like this.

If you have 10 apples

And you divide them by half (0.5).

You end up with 20 halves.

By dividing your cost by 0.7.

you are asking the math, "What total number do I need so that $96.15 represents exactly 70% of it?"

The Rule

Markup is what you add to your cost.

And it often lies to you.

Margin is what you keep from the sale.

And it’s the only number that matters for your bank balance.

If you want to keep 30 cents of every dollar you bill.

You must divide your costs by 0.7.

Your Next Step

To find your leak, you need to compare two numbers from last week.

1. Hours Paid

Get this from your Xero Payroll report.

This is the total time you paid your team for (e.g., 152 hours for 4 staff).

2. Hours Invoiced

This is the total time you actually charged to clients.

If you use Job Management Software (ServiceM8, SimPRO, etc.), run a Billable vs. Non-Billable or Productivity report.

If you bill hourly in Xero, run the Sales by Item report and look at the Quantity column for your labour items.

If you do Flat-Rate/Quoted work, you’ll need to look at your calendar or job cards for the week and add up the actual time spent on-site.

The Reality Check is if you paid for 150 hours.

But can only account for 90 hours of on-site work.

You have a 60-hour leak.

If you can't find these numbers at all.

That is your first Clarity problem.

You can’t manage what you don’t measure.

Start tracking your on-site time this week.

Even if it’s just in a notebook.

So you can see where your profit is going.

What Clarity Feels Like

Before…

You feel like you’re constantly paying for people to stand around.

You’re frustrated that the work is getting done.

But the cash isn't showing up in the bank.

After…

You know exactly how many hours you need to bill to break even.

You’ve adjusted your hourly rate and quotes to cover travel and prep time.

Efficiency Over Effort. Profit Over Payroll Leaks.