Price the Hours the Project Actually Changes
Which paid hours and support costs would disappear or change if a labor or automation proposal worked?
A blended labor rate describes spending across a period. It may not describe the cost a particular improvement can avoid.
A project that eliminates overtime changes different dollars from one that frees time within a paid shift. Before multiplying saved minutes by a rate, identify the hours that would actually change.
Build the current and proposed rosters
For the same demand and operating conditions, show regular hours, overtime, temporary labor, relief, training, and shared support in each case.
Trace rates to the appropriate payroll or contractual basis. Include premiums and minimum call-in charges only where they apply. Separate fixed benefits and overhead from costs that vary with the proposed change.
Do not assume that a faster task eliminates an entire paid hour. Check whether the recovered time can be used and whether the actual staffing or purchasing decision changes.
Calculate the incremental expense
Consider a hypothetical operation that can avoid ten overtime hours per week paid at $36 per hour. If no replacement hours are required, the gross payroll reduction is $360 per week.
If those hours move into ten additional regular hours at $24, the difference is $120. If regular paid hours stay fixed and simply absorb the work, the answer is different again.
Use the actual operating counterfactual. Applying a generic premium to every recovered minute can overstate the result.
Check where the work goes
A reduced crew may rely on more maintenance support, supervisor coverage, or training. Include that requirement even if another department pays it.
If demand growth uses the recovered capacity, describe avoided hiring or additional contribution separately from current payroll reduction. Do not credit the same hour to both cash reduction and extra production unless the operating plan supports both without overlap.
Safety, quality, and ergonomic conditions need their own evaluation. Do not invent an injury or fatigue saving to complete a financial case.
Verify against the changed schedule
After implementation, compare actual paid hours and support load with the proposal, adjusting for volume and mix. If the task got faster but paid hours did not change, report the process improvement and the unresolved conversion separately.
The right labor rate is the one attached to the hours the decision changes. The roster provides the evidence.