CASE STUDY | WORKSHOP PERFORMANCE
TURNING WORKSHOP CAPACITY INTO COMMERCIAL PERFORMANCE
A two-technician agricultural machinery workshop was carrying excessive WIP, ageing jobs, inconsistent labour conversion and significant hidden commercial leakage.
A structured operational approach improved workflow, technician performance and labour sales while exposing deeper issues in skills alignment, warranty recovery, internal costing and management information.
83.1%
WORKSHOP EFFICIENCY
Up from 76.5%
52 → 14 DAYS
AVERAGE WIP AGE
73% reduction
90 → 42
OPEN WIP JOBS
53% reduction
91.3%
WARRANTY RECOVERY
THE NUMBERS SHOWED A PROBLEM. THEY DIDN’T EXPLAIN IT.
The workshop was carrying approximately 90 open jobs with an average WIP age of 52 days.
Technician capacity was not consistently reaching invoice.
Internal work appeared particularly weak, outstanding parts were contributing to delay, technician performance varied considerably and the available technical skillset did not fully match the work generated by the depot.
At first sight, this could have been treated as a straightforward technician-productivity problem.
It wasn’t.
The operation contained interconnected issues across workflow, WIP control, job ownership, technician planning, parts availability, skills and competence, available demand, labour conversion, warranty recovery, internal cost allocation, Sales-to-Service accountability and management reporting.
The objective was therefore not simply to make technicians work harder.
It was to establish where productive capacity, revenue and margin were actually being lost.
FOLLOW THE WORK. FOLLOW THE HOURS. FOLLOW THE MONEY.
The workshop was managed as an operating system rather than as a collection of isolated KPIs.
Greater control was introduced around WIP, job progression, parts availability, technician planning, completion and invoicing.
Technician performance was analysed individually.
Available and productive hours were followed through to invoiced hours and ultimately into recovered value.
WORKFLOW — Is work moving efficiently from arrival to completion?
CAPACITY — How much of the labour capacity being purchased is being productively deployed?
CAPABILITY — Do technician skills match the work the operation actually generates?
CONVERSION — How effectively does productive work become invoiced labour?
COMMERCIAL CONTROL — Does the business ultimately retain the value being created?
“A KPI tells you where to look. It doesn’t necessarily tell you what is wrong.”
CONTROL FIRST. PERFORMANCE FOLLOWED.
WORKSHOP EFFICIENCY
76.54% → 83.05%
+6.51 percentage points
TECHNICIAN A EFFICIENCY
78.54% → 90.36%
+11.82 percentage points
TECHNICIAN B EFFICIENCY
63.25% → 74.11%
+10.86 percentage points
INTERNAL EFFICIENCY
35.38% → 52.28%
+16.90 percentage points
OPEN WIP
90 → 42
53% reduction
AVERAGE WIP AGE
52 → 14 days
73% reduction
The improvement was achieved using the existing two-technician structure. Both technicians improved while the number and age of jobs held within WIP reduced significantly.
Reducing WIP alone can be administrative. Improving a labour KPI alone can conceal problems elsewhere.
Here, work moved through the operation faster while technician capacity was converted more effectively into completed and invoiced activity.
PRODUCTIVE HOURS ONLY CREATE VALUE WHEN THEY REACH THE INVOICE.
Monthly invoiced-hour data contained significant volatility because historic completed work had not always been processed and invoiced promptly. Productive work had accumulated before eventually reaching invoice. For that reason, cumulative year-to-date performance provides a more meaningful measure of commercial labour conversion.
JANUARY–AUGUST 2026
2,010.96 STANDARD / EFFICIENT HOURS
1,924.68 HOURS INVOICED
95.7% OVERALL LABOUR CONVERSION
Across the eight-month reporting period, approximately 96% of standard/efficient workshop hours ultimately converted into invoiced labour.
THE SAME WORKSHOP. TWO VERY DIFFERENT CAPACITY PROFILES.
TECHNICIAN A
1,447.60
Standard / efficient hours
1,467.19
Hours invoiced
101.35%
Labour conversion
TECHNICIAN B
563.36
Standard / efficient hours
457.49
Hours invoiced
81.21%
Labour conversion
The stronger-performing technician achieved 101.35% conversion across the cumulative reporting period. That is sustained conversion of productive job time into sold labour rather than a one-month spike.
The second technician achieved 81.21%. That lower result was not treated simply as poor productivity. It prompted further diagnosis.
WHEN THE PROBLEM ISN’T SIMPLY EFFORT.
The second technician presented a different operational challenge. Prior to the management intervention, only 108 invoiced hours had been generated. Subsequent work allocation, operational control, technical support and training materially increased invoiced output.
However, a significant structural constraint remained. The technician’s existing skillset did not sufficiently match the demographic of work available to the depot. The operation increasingly required capability across specialist groundcare machinery, robotic equipment, electrically powered equipment, electrical isolation, machinery servicing, PDI activity and general agricultural engineering.
CAPABILITY — Can the technician competently and safely undertake the work?
DEMAND — Does the depot generate sufficient work suited to the technician’s existing skills?
WORK DISCIPLINE — When suitable work exists, is it progressed efficiently?
This distinction matters because all three problems can produce poor-looking utilisation figures. They require completely different management responses.
“Good capacity management is not about demanding 100% from every technician. It is about understanding what prevents the capacity you are paying for from becoming commercially productive.”
MORE HEADCOUNT WASN’T THE ANSWER. THE RIGHT CAPABILITY WAS.
The requirement identified was not simply another technician. The operation required a broader agricultural engineering skillset capable of covering agricultural machinery, groundcare, servicing, PDI and general workshop activity.
This would allow labour capacity to be deployed against a much broader proportion of the work the depot could actually generate. The recommendation was therefore based on capability and demand rather than headcount alone.
“Recruit for the work the business can sell — not simply to increase the number of people in the workshop.”
OPERATIONAL CONTROL TRANSLATED INTO SALES.
77.6%
ABOVE LABOUR-SALES TARGET
July–August average performance
27.1%
ABOVE FULL-YEAR LABOUR-SALES TARGET
By 01 September
ONE PERCENTAGE NEVER TELLS THE WHOLE STORY.
PRODUCTIVITY / EFFICIENCY — How effectively paid technician capacity becomes productive work.
LABOUR CONVERSION — How effectively standard or efficient job hours become invoiced hours.
RECOVERY — How much of available technician capacity ultimately reaches invoice.
LABOUR YIELD — How much commercial value is ultimately generated from the capacity being purchased.
Those are different problems. They require different action.
THE JOB ISN’T PROFITABLE UNTIL THE VALUE IS RECOVERED.
91.25%
RECOVERY RATE
Warranty control formed part of the wider operational review, recognising that workshop performance does not end when the technical work is completed.
The operation achieved a 91.3% warranty recovery rate, materially outperforming comparable operations within the wider business.
“Producing the hours matters. Protecting their value matters just as much.”
THE HEADLINE SAID RECOVERY HAD FALLEN. THE DETAIL SAID SOMETHING DIFFERENT.
RETAIL WORK MIX
Approximately 72% → 52%
WARRANTY WORK MIX
Approximately 12% → 25%
Headline reporting initially appeared to show deterioration in overall labour recovery. Analysis by sale type demonstrated that the underlying recovery rates remained broadly stable.
What had changed materially was the work mix. Retail represented approximately 72% of invoiced technician hours in the earlier period and approximately 52% subsequently. Warranty increased from approximately 12% to 25%. The apparent deterioration in blended recovery was caused primarily by this change in work mix rather than a material deterioration in the underlying recovery performance of each sale type.
“The headline suggested deteriorating recovery. The underlying data identified a change in sales mix.”
WHEN WORKSHOP INEFFICIENCY ISN’T WORKSHOP INEFFICIENCY.
Internal efficiency improved from 35.38% → 52.28%. One technician improved from 25.91% → 60.24%. But deeper analysis identified a structural commercial issue behind the remaining loss.
THE WORK HAD TO BE DONE. THE COMMERCIAL ALLOWANCE DIDN’T ALWAYS COVER IT.
Used machinery transactions were commonly agreed using a predetermined preparation allowance covering expected workshop labour and parts. Subsequent technical inspection could identify legitimate additional defects that were not included within the original commercial provision.
Where these costs were absorbed by Service rather than attributed to the machine transaction, workshop performance could appear weaker while the reported Sales margin remained protected.
50–70%
OF LEGITIMATE INTERNAL LABOUR
COULD BE WRITTEN OFF
OPERATIONAL VARIANCE — Work taking longer than it reasonably should.
COMMERCIAL PREPARATION VARIANCE — Additional legitimate work that was not adequately provided for within the original machine transaction.
“THE COST HAD NOT DISAPPEARED. IT HAD SIMPLY MOVED BETWEEN DEPARTMENTAL PROFIT CENTRES.”
PROTECTING A SALE IS NOT THE SAME AS PROTECTING BUSINESS MARGIN.
SALES ALLOWANCE → TECHNICAL INSPECTION → ACTUAL SCOPE → ADDITIONAL WORK → COMMERCIAL APPROVAL → ACTUAL LABOUR & PARTS → OPERATIONAL VARIANCE → TRUE MACHINE MARGIN
“Did the workshop perform the work efficiently?”
“Was the machine correctly appraised and commercially provisioned?”
WORKSHOP PERFORMANCE DOESN’T STOP AT LABOUR.
24.0% TP MARGIN - PARTS
The management model extended beyond Service to incorporate Parts performance, allowing sales, cost, margin and direct operational contribution to be monitored alongside workshop activity.
Rather than relying purely on turnover, the model tracked the percentage margin being retained and then calculated operational contribution after directly attributable costs. This provided a much clearer indication of whether activity was actually creating commercial value.
DON’T WAIT FOR THE ACCOUNTS TO FIND OUT WHAT HAPPENED.
A bottom-up operational costing model was developed using live business activity to provide an earlier view of sales, cost, margin and operational contribution.
99.31%
COSTING MODEL ACCURACY
Against subsequent monthly accounts
When subsequently reconciled against the completed monthly accounts, the model was 99.31% accurate.
The significance was not simply the accuracy of the forecast. It demonstrated that operational information could be translated into a reliable near-live view of commercial performance while management still had time to influence the result.
“Management information is most valuable while you can still do something about it.”
THE WORKSHOP AND THE P&L SHOULD TELL THE SAME STORY.
TECHNICIAN CAPACITY → PRODUCTIVE HOURS → STANDARD HOURS → INVOICED HOURS → LABOUR SALES → RECOVERY
PARTS SALES → PARTS COST → MARGIN → OPERATIONAL CONTRIBUTION
WIP → AGE → PARTS DELAYS → COMPLETION → INVOICE
The purpose of the operating model was not to replace the financial accounts. It was to provide management with information early enough to influence them.
Operational performance and financial performance should not be treated as separate subjects. One creates the other.
FROM SYMPTOMS TO COMMERCIAL CONTROL.
WORKFLOW — 53% reduction in open WIP | 73% reduction in average WIP age
WORKSHOP EFFICIENCY — 76.54% → 83.05%
TECHNICIAN A — 78.54% → 90.36% efficiency | 101.35% YTD labour conversion
TECHNICIAN B — 63.25% → 74.11% efficiency | 81.21% YTD labour conversion
OVERALL LABOUR CONVERSION — 95.7% YTD
INTERNAL EFFICIENCY — 35.38% → 52.28%
LABOUR SALES — 77.6% above target across July–August | 27.1% above full-year target by 01 September
WARRANTY — 91.3% recovery
PARTS — 24.0% TP margin | Operational contribution tracked through the live costing model
MANAGEMENT INFORMATION — 99.31% costing-model accuracy against subsequent monthly accounts
CAPACITY — Skills-to-demand mismatch identified; recruitment requirement redefined around capability rather than headcount.
THE SAME KPI CAN HAVE FOUR DIFFERENT CAUSES.
A technician taking eight hours to complete six hours of appropriate work is an efficiency problem.
A technician without enough suitable work is a demand problem.
A technician unable to undertake the work that is available because the required competence does not exist is a capability problem.
A technician completing legitimate work that is subsequently written off to protect a machine transaction is a commercial-costing problem.
Completed warranty work that is not recovered is a revenue-protection problem. Productive work that remains unprocessed is a workflow and invoicing problem. Parts delays preventing completion are an operational-flow problem.
All of these can eventually appear on a dashboard as poor workshop performance. They require completely different management responses.
PRUDOM PERSPECTIVE
THE DASHBOARD IS THE BEGINNING OF THE CONVERSATION. NOT THE END.
Good operational management is not about chasing percentages in isolation. It is about understanding how the business converts people, time, work and cost into commercially recoverable value.
DEMAND → SKILLS → CAPACITY → PLANNING → PARTS → EXECUTION → COMPLETION → INVOICE → RECOVERY → MARGIN
“WE DON’T STOP AT WHAT THE NUMBERS SAY. WE ESTABLISH WHY THEY’RE SAYING IT — AND WHAT NEEDS TO CHANGE.”
WHAT IS YOUR WORKSHOP REALLY COSTING YOU?
PRUDOM’s Workshop Performance Review examines the operation behind the headline numbers. We look at where capacity, time and margin are being lost — and what can realistically be recovered.
Understand the operation. Quantify the opportunity. Make the changes that improve commercial performance.