How do you calculate bottleneck schedule impact?

Multiply overloaded constraint hours by the impact per constrained hour and the bottleneck-attributable share, then add recovery cost. With 42 hours at $210, 90% attributable, plus $1,200 recovery, the impact is $9,138.

Why is an hour at the bottleneck worth more than elsewhere?

Because the constraint sets the throughput rate for the entire plant. The $210 per constrained hour reflects lost plant-wide throughput margin, not just the station's labor cost — which is why 42 overloaded hours drive $7,938 of attributable impact.

What should the impact-per-constrained-hour value be?

Use the throughput contribution (price minus truly variable cost) of the products that flow through the constraint, divided by constraint hours. This is a Theory of Constraints "throughput per constraint unit" figure, typically much higher than a shop labor rate.

What is the bottleneck-attributable share for?

It removes the portion of overload caused by non-scheduling factors like a downstream rework loop or a temporary demand spike. At 90%, you attribute nearly all of the overload to schedule and load decisions you can control.

Should I offload the bottleneck or pay the recovery cost?

Compare the attributable impact to the offload cost. Here the constraint is burning $7,938 of throughput value; if offloading to an alternate route or shift costs less than that plus the $1,200 recovery, offloading wins.

How is this different from a generic overtime cost?

Generic overtime prices labor; this prices lost throughput at the one resource that gates the whole plant. The two can differ by an order of magnitude, which is exactly why constraints deserve their own cost lens.

Advanced Planning, Scheduling & APS calculator

Bottleneck Schedule Impact Calculator

Bottleneck schedule impact prices what it costs when your constraint work center is loaded beyond what it can deliver. In Theory of Constraints terms, an hour lost at the bottleneck is an hour lost for the whole plant, so overloading it has an outsized dollar effect that ripples through every downstream order. Constraint managers and APS schedulers use this to decide whether to offload work, add a shift, or accept the recovery cost. It separates the throughput value burned at the constraint from the one-time setup or expedite spend needed to recover. That distinction is what makes the number actionable.

What this calculator does

Estimate the cost impact of bottleneck overload from constrained hours, hourly impact, bottleneck responsibility, and fixed recovery cost.
a capacity planner needs to quantify the schedule exposure created by a bottleneck work center
It multiplies overloaded bottleneck hours by the dollar impact per constrained hour and the bottleneck-attributable share, then adds recovery setup or expedite cost.

Formula used

Constraint-attributable impact = overloaded bottleneck hours × impact per constrained hour × bottleneck-attributable share
Bottleneck schedule impact = constraint-attributable impact + recovery setup or expedite cost

Inputs explained

Overloaded bottleneck hours:
Impact per constrained hour:
Bottleneck-attributable share:
Recovery setup or expedite cost:

How to use the result

Use it when a constraint work center is overloaded in the schedule, when weighing offloading versus capacity additions, or when justifying constraint-buffer protection.
The impact per constrained hour should reflect true throughput margin lost, not just labor rate; using a low cost rate badly understates a real bottleneck's value.

Current U.S. benchmarks

Manufacturing hourly earnings average $30.27 (BLS, Jun 2026), up 4.4% from a year earlier. Median machinist pay is $28.24/hr (OEWS 2025), with state medians on each state page. Manufacturers have 529k open positions nationally (BLS JOLTS).
U.S. manufacturing runs at 75.6% of capacity (Federal Reserve, May 2026). New factory orders are up 2.3% year over year (Census).

Common questions

How do you calculate bottleneck schedule impact? Multiply overloaded constraint hours by the impact per constrained hour and the bottleneck-attributable share, then add recovery cost. With 42 hours at $210, 90% attributable, plus $1,200 recovery, the impact is $9,138.
Why is an hour at the bottleneck worth more than elsewhere? Because the constraint sets the throughput rate for the entire plant. The $210 per constrained hour reflects lost plant-wide throughput margin, not just the station's labor cost — which is why 42 overloaded hours drive $7,938 of attributable impact.
What should the impact-per-constrained-hour value be? Use the throughput contribution (price minus truly variable cost) of the products that flow through the constraint, divided by constraint hours. This is a Theory of Constraints "throughput per constraint unit" figure, typically much higher than a shop labor rate.
What is the bottleneck-attributable share for? It removes the portion of overload caused by non-scheduling factors like a downstream rework loop or a temporary demand spike. At 90%, you attribute nearly all of the overload to schedule and load decisions you can control.
Should I offload the bottleneck or pay the recovery cost? Compare the attributable impact to the offload cost. Here the constraint is burning $7,938 of throughput value; if offloading to an alternate route or shift costs less than that plus the $1,200 recovery, offloading wins.

Last reviewed 2026-05-12.