Why connecting sales data and labor hours matters, what data to bring together, and how to use it without clocking in at the register.
Labor cost as a share of sales, by hour and day.
Staff peaks, trim quiet hours.
Tips matched to hours worked.
Spot overstaffed shifts the same week.
| Option | Pros | Cons |
|---|---|---|
| On the POS terminal | One device, familiar | Ties up the register at shift change; harder for non-register staff |
| Separate kiosk or tablet | Fast, works for every role | Needs a link or export to compare with sales |
| Mobile app with location check | No queue, works for off-site staff | Needs a clear policy on phones |
| NFC tag at the entrance | Quick tap, little hardware | Same need to combine with sales |
See our guide to choosing a time clock.
Use our labor cost percentage calculator and restaurant labor cost guide.
Where tips are pooled, the share each employee receives often depends on hours worked. That means tip totals from the POS and hours from the time clock must match by date and shift. Tip pooling and tip credit rules differ by state, and some states prohibit tip credits entirely. See tip credit.
To record clock-ins, breaks and overtime automatically, see EZTime time and attendance software.
A café owner felt Tuesdays were overstaffed but had no proof. Comparing hourly sales from the POS with hours from the time clock for four weeks showed that sales per labor hour on Tuesday afternoons were about half of other weekdays. Moving one afternoon shift to Saturday morning lowered labor cost without any complaints about service.
| Metric | Formula | Use it to |
|---|---|---|
| Labor cost % | Labor cost ÷ sales × 100 | Compare weeks and locations |
| Sales per labor hour | Sales ÷ hours worked | Spot over and understaffed hours |
| Covers or transactions per labor hour | Transactions ÷ hours worked | Staff for workload, not just revenue |
Try them with our labor cost percentage calculator.
EZTime does not claim a specific POS integration on its site, so check with the team for your POS. What EZTime does provide: scheduling with real-time labor costing, payroll-ready exports to PDF and Excel, advanced API access on higher plans and EzTip tip pooling, which splits tips by hours and role with history and export.
Opening, closing, deliveries and deep cleaning are paid hours with no sales attached. If they are mixed into the comparison, the first and last hour of each day will always look overstaffed. Give that work its own task code, so you can compare selling hours with sales and keep the support work visible on its own line.
| Block | Hours worked | Net sales | Sales per labor hour |
|---|---|---|---|
| 6:00 to 7:00 opening | 3 | $0 | Not measured |
| 7:00 to 11:00 | 14 | $1,260 | $90.00 |
| 11:00 to 15:00 | 16 | $1,520 | $95.00 |
| 15:00 to 18:00 | 9 | $450 | $50.00 |
| 18:00 to 19:00 closing | 2 | $0 | Not measured |
Measured this way, the 15:00 to 18:00 block stands out on its own, instead of being blurred by the closing hour.
| Mistake | Fix |
|---|---|
| Comparing scheduled hours with sales | Use approved hours worked |
| Using sales including tax | Use net sales before tax, the same way every week |
| Mixing locations with different opening hours | Compare each location with its own history |
| Counting salaried managers in one week and not the next | Decide whether salaried time is included and keep the rule |
Three quick questions based on this page. Pick an answer to see if you got it.
No. A separate clock works well as long as hours and sales can be compared for the same periods.
It varies by concept and location. Track your own trend and compare with similar businesses.
Federal rules bar managers and supervisors from keeping tips from a pool. State rules may add more limits.
Weekly at minimum, and daily during busy seasons.
Track them separately. They are necessary paid hours with no sales, and mixing them in makes the first and last hours look overstaffed.
Either works if you use the same definition every week. Most operators use net sales before tax.
Try EZTime for 14 days, no credit card required. For a team of 15, EZTime starts at about $30 a month ($2 per employee).