Learn how to measure overtime cost as a percentage of payroll so you can spot labor inefficiencies before they hurt your margins. In this lesson, you’ll see how to organize payroll data, compare overtime against total labor cost, and build a clear monthly chart with a target line to monitor performance over time.
Download the Excel file used in this tutorial:
Start by adding the three helper columns used in the video:
For Total Employer Payroll Cost, use the SUM function to combine the payroll burden components shown in the dataset, including items like:
For Month, use the EOMONTH function on the pay period end date so each record rolls up to the last day of its month.
For Overtime Pay, calculate the overtime amount using the employee’s overtime hours and base rate. In the video, this is based on time-and-a-half.
Once these three columns are in place, the dataset is ready for monthly aggregation.
The video uses a structured Excel table to make formulas easier to build and maintain.
Using a table makes it much easier to reference columns by name instead of using standard cell ranges.
On the summary section, generate a clean list of months using the UNIQUE function.
Instead of referencing a normal range, the video uses the table column that stores the month values created with EOMONTH. This removes duplicates so each month appears only once.
This monthly list becomes the foundation for the KPI summary.
Next to the unique month list, add the summary headers used in the video:
These columns will hold the monthly totals and KPI values used in the final chart.
Use the SUMIFS function to total the Overtime Pay column by month.
In this step:
After entering the first formula, double-click the fill handle to copy it down through the full month list.
This gives you total overtime dollars for each month.
Use SUMIFS again to total the Total Employer Payroll Cost column by month.
This follows the same logic as the overtime calculation:
Once copied down, this gives you full monthly payroll totals.
To get the KPI, divide monthly overtime by monthly payroll.
Then format the result as a percentage using Ctrl + Shift + 5.
This creates the monthly Overtime Cost % of Payroll value shown in the dashboard.
Add a target percentage in the first row of the Target column.
In the video, the target is entered manually and formatted to one decimal place.
Then copy that same value down through the remaining months so you have a consistent target line across the entire period.
This creates the reference band used in the final chart.
To create the visual:
The chart is set up so:
At this point, the chart may not look correct if both series are on the same axis, because the dollar values are much larger than the percentages.
Inside the combo chart settings, place the Overtime dollar series on the secondary axis.
This is the key formatting step in the video because the KPI is the percentage, so the main vertical axis should reflect the percent scale, not the dollar scale.
Once adjusted, the chart becomes much easier to read.
To include the target band:
Then format that new series so it appears as a simple reference line. In the video, the target is styled so it stays visible without taking up too much visual space.
This gives you a clear benchmark for when overtime cost is above or below the desired threshold.
To finish the dashboard:
This final cleanup makes the chart presentation-ready and easier to interpret month by month.
Q1. What is overtime cost as a percentage of payroll?
Overtime Cost % of Payroll measures how much of your total payroll spending is being driven by overtime pay. It is a valuable human resources KPI because it shows whether labor costs are staying under control as workload changes throughout the year.
Q2. Why is overtime cost % of payroll important to track?
This KPI helps businesses see whether rising demand is being handled efficiently or whether too much overtime is reducing profitability. When overtime grows faster than payroll or revenue, it can signal staffing issues, scheduling inefficiencies, or weak labor planning.
Q3. How do I track overtime cost % of payroll in Excel step by step?
You can organize payroll data by pay period, summarize total payroll and overtime by month, calculate the monthly percentage, and then visualize the trend with a chart. This makes it easier to monitor peak seasons, compare results over time, and identify months where overtime exceeds your target.
Q4. What should be included in total payroll for this KPI?
Total payroll should include more than just gross wages. Many companies also include employer payroll costs such as taxes, benefits, workers’ compensation, and unemployment costs so the KPI reflects the full labor expense.
Q5. What is a good target for overtime cost as a percentage of payroll?
The right target depends on your industry, labor model, and seasonality. Many businesses set a target band so they can quickly see when overtime moves above an acceptable range and needs management attention.
Q6. What’s the best way to visualize overtime cost % of payroll?
A combo chart works well because it lets you display overtime dollars alongside the overtime percentage and a target line. This gives managers a clearer view of both the cost impact and the KPI trend in one visual.