What it means
Many businesses budget for some overtime, and comparing actual overtime to that budget gives an early signal about capacity and labour costs. A variance should use consistent dates, employee groups and cost definitions, since comparing gross payroll in one period with only hourly premiums in another creates a misleading result.
Decide whether the budget is a fixed monthly amount or a flexible allowance linked to output. A fixed budget of $20,000 may look badly exceeded when a factory produces far more units than expected, even if overtime per unit fell, and the budget should not be silently changed after the fact to make results look good.
Split the variance into hours and rate. Hours may rise because demand increased, vacancies remained open, equipment broke down, tasks were reworked, or shifts were poorly planned, while cost per hour may rise because staff moved into higher premium bands, more senior employees covered shifts, or the budget used an outdated wage rate, and local contracts and labour rules determine overtime pay.
Check where the hours were recorded, since overtime approved but not yet paid may belong in the reporting period as an accrual and hours mistakenly coded to ordinary time can hide the true cost. Reconcile timesheets, approvals, payroll, agency invoices and the operating schedule before explaining a surprise, and address unrecorded hours and compliance separately.
An unfavourable variance is not always a bad choice, because paying extra hours to protect a critical deadline can be cheaper than losing an order. But repeated overtime can cause fatigue, errors, injuries and turnover, so compare cross-training, temporary staff or another hire, including the ramp-up time and minimum coverage of those alternatives and not only their hourly rates.
Managers should see the reasons and actions, not only a red number, and if the demand is permanent rather than temporary, future forecasts should be updated through the normal planning process instead of treating each month's overrun as a surprise, with an owner and date assigned to the action. For business owners, overtime variance links the payroll line to the work that generated it, and used well it supports staffing, pricing and service decisions.
In practice
Real-world examples.
Example
A warehouse spends $12,000 more than its overtime budget during a one-off product launch; managers compare that cost with the extra orders fulfilled and the promised delivery dates.
Example
A clinic's overtime hours are on plan, but spending is higher because more senior staff covered shifts at different rates. It separates the rate effect from the hours effect.
Example
A workshop repeatedly exceeds the overtime budget after a key machine breaks down. It investigates maintenance and staffing rather than telling staff simply to work faster.
Formula
Calculation
Overtime budget variance = Actual overtime cost - Budgeted overtime cost
Worked example. An invented company budgeted $30,000 for overtime in a month and recorded $38,500 of approved overtime cost.
- Overtime budget variance = $38,500 - $30,000 = $8,500 unfavourable.
- If output was 20% above plan, a flexible budget of $36,000 ($30,000 x 1.2) shows only a $2,500 unfavourable variance ($38,500 - $36,000), so $6,000 of the $8,500 reflects higher activity and not poor control.
State whether cost includes only premium pay or the full cost of overtime hours, and use the same basis in both sides of the formula.Case study
Seen in the real world.
This illustrative and entirely fictional example follows Seabright Laundry, an invented provider for small hotels. Its overtime budget was $24,000 for a month, but the payroll report showed $39,000. The operations manager initially blamed a busy holiday week and asked finance to raise next month's budget. Finance separated the extra hours by site and day. Part of the rise followed a genuine increase in hotel occupancy, but most came from late rewash caused by a dryer that repeatedly failed.
Of the $15,000 variance ($39,000 - $24,000), finance traced about $4,000 to higher hotel occupancy, about $9,000 to rewash from the failing dryer and the remaining $2,000 to senior staff covering shifts at premium rates that trained colleagues could have covered. It recorded the full variance rather than moving costs to ordinary labour. Seabright repaired the dryer, cross-trained a backup team and compared future overtime per load as well as total monthly spending. The owner approved a temporary allowance for a known upcoming peak, but kept a separate target for avoidable rewash. The next report showed whether the repair reduced repeated hours without hiding the cost of extra customer demand.
Watch out
Common mistakes.
- Calling every over-budget amount inefficient without checking output, service commitments and the cause.
- Mixing full overtime wages on one side with only overtime premiums on the other.
- Moving hours into a different expense category to make the overtime line appear on budget.
Questions
People also ask.
Is an unfavourable variance always bad?
No. It may reflect valuable extra work, but managers should compare the benefit, alternatives and any staff or quality risk.
Should a flexible budget replace the original one?
Show both. The original reveals the cash departure from plan, while the flexible comparison helps explain efficiency at actual activity levels.
Which records should be checked?
Reconcile approved timesheets, payroll, any accruals, agency cover and operating output on a consistent cost basis.
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