How do you calculate overtime schedule cost?

Multiply planned overtime hours by the loaded overtime labor rate and the schedulable share, then add fixed supervision and startup cost. With 64 hours at $78/hr, a 92% schedulable share, and $600 of supervision, that's 64 x 78 x 0.92 = $4,592.64 plus $600, giving $5,192.64.

Why include a schedulable overtime share instead of all planned hours?

Rarely do 100% of planned OT hours convert to productive scheduled work. Absenteeism, machine availability, and crew willingness mean only a portion is reliably schedulable. The 92% share in the example trims the labor base from a notional full block down to the $4,592.64 you can actually count on.

What is a good overtime cost per scheduled hour?

There's no universal target, but a useful sanity check is the effective rate the tool reports. Here the $5,192.64 total spread over the planned 64 hours works out to roughly $81/hr loaded once supervision is folded in, versus the $78/hr base rate. If your effective rate runs far above the base, your fixed startup overhead is too large for the block size.

Overtime vs subcontracting: which is cheaper?

Compare this tool's total against a subcontract quote for the same throughput. Overtime wins when supervision and startup cost stay small relative to the labor recovered; subcontracting often wins for large multi-week shortfalls where startup overhead repeats every shift.

Does the supervision and startup cost recur for every shift?

Yes. The $600 in the example is per overtime block. If you run overtime across five separate weekend shifts, you incur startup cost five times, so consolidating OT into fewer, longer blocks usually lowers cost per scheduled hour.

How can I lower overtime schedule cost?

Raise the schedulable share by confirming crew and machine availability before authorizing, batch OT into fewer blocks to dilute the fixed $600 startup, and reserve premium double-time tiers only for true must-ship orders.

Advanced Planning, Scheduling & APS calculator

Overtime Schedule Cost Calculator

Overtime schedule cost is the fully-loaded dollar amount a plant commits when it adds extra hours to recover a late schedule or absorb a demand spike. Production planners and shift supervisors use it during APS scheduling runs to decide whether an overtime block is cheaper than expediting, subcontracting, or slipping the promise date. The number matters because raw overtime hours understate the true cost: not every planned hour is actually schedulable, and each OT block carries fixed supervision and line-startup overhead that doesn't show up in the hourly rate. Pricing the block before you authorize it keeps your labor variance from blowing up at month-end.

What this calculator does

Estimate overtime cost needed to support a production schedule from overtime hours, premium rate, schedulable share, and fixed staffing cost.
an operations manager needs to evaluate whether overtime is justified for the schedule
It computes the total cost of a planned overtime block by multiplying planned hours by the loaded OT rate and the share you can actually schedule, then adding fixed supervision and startup overhead.

Formula used

Schedulable overtime labor = planned overtime hours × overtime labor rate × schedulable overtime share
Overtime schedule cost = schedulable overtime labor + supervision and startup cost

Inputs explained

Planned overtime hours:
Overtime labor rate:
Schedulable overtime share:
Supervision and startup cost:

How to use the result

Use it when an APS or finite-capacity schedule shows a shortfall and you're deciding whether to authorize an overtime shift versus subcontracting or expediting.
It assumes a single blended OT rate and a flat startup cost; mixed premium tiers (time-and-a-half vs double-time, weekend differentials) and fatigue-driven productivity loss are not modeled and must be handled outside the tool.

Current U.S. benchmarks

As of Jun 2026, average hourly earnings in U.S. manufacturing are $30.27 (BLS), up 4.4% from a year earlier. Burdened shop rates typically run 1.3 to 1.8 times earnings once benefits and overhead are loaded.
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 overtime schedule cost? Multiply planned overtime hours by the loaded overtime labor rate and the schedulable share, then add fixed supervision and startup cost. With 64 hours at $78/hr, a 92% schedulable share, and $600 of supervision, that's 64 x 78 x 0.92 = $4,592.64 plus $600, giving $5,192.64.
Why include a schedulable overtime share instead of all planned hours? Rarely do 100% of planned OT hours convert to productive scheduled work. Absenteeism, machine availability, and crew willingness mean only a portion is reliably schedulable. The 92% share in the example trims the labor base from a notional full block down to the $4,592.64 you can actually count on.
What is a good overtime cost per scheduled hour? There's no universal target, but a useful sanity check is the effective rate the tool reports. Here the $5,192.64 total spread over the planned 64 hours works out to roughly $81/hr loaded once supervision is folded in, versus the $78/hr base rate. If your effective rate runs far above the base, your fixed startup overhead is too large for the block size.
Overtime vs subcontracting: which is cheaper? Compare this tool's total against a subcontract quote for the same throughput. Overtime wins when supervision and startup cost stay small relative to the labor recovered; subcontracting often wins for large multi-week shortfalls where startup overhead repeats every shift.
Does the supervision and startup cost recur for every shift? Yes. The $600 in the example is per overtime block. If you run overtime across five separate weekend shifts, you incur startup cost five times, so consolidating OT into fewer, longer blocks usually lowers cost per scheduled hour.

Last reviewed 2026-05-12.