Labour cost can rise because hours increase, pay rates change, sales soften or work becomes less efficient. The same headline number can describe very different operating problems. Separate those drivers before deciding what to change.
1. Define the measure and period
Compare like periods, sites and activities. Note whether you are looking at total labour cost, paid hours, cost as a share of revenue or hours per unit of demand. Include overtime and agency or contractor spend where relevant, and keep the definition consistent.
| Measure | What it can tell you | Question to ask |
|---|---|---|
| Paid hours | How much labour was used. | Did hours move with customer or task demand? |
| Average cost per hour | Changes in rate or labour mix. | Did overtime, agency use or role mix change? |
| Labour cost ÷ revenue | Cost relative to sales. | Did the ratio change because of labour or revenue? |
| Hours per unit of demand | Workload relative to activity. | Is the team doing more work for each unit delivered? |
Illustrative example: Labour spend stays at $10,000 while weekly revenue falls from $100,000 to $90,000. The labour share moves from 10% to about 11.1% even though labour spend has not increased. The question is what changed in demand and whether deployment can respond without harming service.
2. Trace the work behind the hours
Use Task Mapping to record recurring activities, frequency and time. Include opening and closing work, meetings, travel, service recovery, rework and other work that does not always show in sales data. Check estimates with the team doing the work.
3. Find the source of the gap
Look for a mismatch between rostering and demand, duplicated tasks, excess handoffs, skills that cannot be deployed where needed, or work that peaks at a different time from sales. Compare similar sites only after allowing for service scope and workload differences.
4. Protect the outcome
For each proposed change, specify the expected effect on hours or cost and the service measure to watch. A shorter roster that produces longer waits, errors or more rework may move cost elsewhere. Trial a small change, assign an owner and review both cost and service together.
A short table with the cost driver, evidence, proposed action, owner and the service measure you will monitor. Start with the largest explainable variance.
Explore the rising labour costs challenge and the new CLEAR P&L program for connecting operational drivers to reporting and reviews.
Use the efficiency guide to pilot a change when the work itself is driving hours.