Build shifts from your sales, not from habit. Count how many covers you serve in each hour, measure how many covers per hour one person can handle in the kitchen and on the floor, and put people only where the covers are. Then divide the cost of those shifts by the night's covers. That is your labour cost per cover, and it tells you whether the schedule is right.
Why the same shift for everyone costs you
In plenty of restaurants everyone clocks in at four and out at eleven. It is easy to organise, but the room is full for two hours and half empty the rest. The quiet hours are paid at the same rate as the slammed ones.
Labour and food are the two costs that move most with how you run service. That is why prime cost looks at them together. For what goes into each person's hourly cost (wages, the extras you pay on top, staff meals), see how to cost labour.
Step 1: count covers by the hour
Pull two or three weeks of tickets from your till or POS. For each day of the week, write down how many covers came in each hour. A Tuesday is not a Saturday, so do not average them together.
No POS? Use the time the server writes on the ticket. You do not need minutes; hours are enough. The guide on covers, average ticket and table turnover shows how to keep that record without much effort.
Step 2: measure what one person can handle
This number is yours, not a textbook's. Watch a normal busy hour and count:
- Kitchen: how many plates per hour each cook on the line sends out before tickets start backing up.
- Floor: how many covers per hour each server looks after before guests wait too long to order or pay.
A grill-to-order burger menu gives a different number from a pizza oven where one person can fire several pies at once. Measure it with your menu.
Step 3: build the shift hour by hour
Divide each hour's covers by what one person handles. Round up. That gives you how many people you need in each slot. Then add the hours outside service: afternoon prep, setting the room and closing down.
Now you can see who needs to be there all night and who only for the rush.
Worked example: a burger and pizza place
You open for dinner. Here are your covers on a typical Tuesday, averaged from three weeks of tickets:
| Hour | Covers |
|---|---|
| 5–6 pm | 14 |
| 6–7 pm | 38 |
| 7–8 pm | 52 |
| 8–9 pm | 30 |
| 9–10 pm | 10 |
| Total | 144 |
Today: 7 people (4 in the kitchen, 3 on the floor), all from 4 pm to 11 pm, 7 hours each. Each person costs you $18 an hour, everything included.
- Hours paid: 7 × 7 = 49 hours
- Cost of the night: 49 × $18 = $882
- Labour per cover: 882 ÷ 144 = $6.13
What you measured: one server looks after 18 covers an hour comfortably. At 7 pm you get 52 covers, so 52 ÷ 18 = 2.9, which rounds up to 3 servers. At 9 pm you get 10: one is enough. One cook sends out about 20 plates an hour, so the 7 pm rush needs 3 cooks, not 4.
New schedule:
- Kitchen: 2 cooks from 4 pm to 11 pm (prep, service and close) and 1 from 5 pm to 10 pm. That is 7 + 7 + 5 = 19 hours.
- Floor: 1 server from 4 pm to 11 pm (sets up and closes), 1 from 5:30 to 10:30 pm and 1 from 6 to 10 pm. That is 7 + 5 + 4 = 16 hours.
- Hours paid: 19 + 16 = 35 hours
- Cost of the night: 35 × $18 = $630
- Labour per cover: 630 ÷ 144 = $4.38
That is $252 less per night for the same 144 covers. Over 26 service nights a month, $6,552. Before you change anything, talk to your team: not everyone can or wants to work a shorter shift, and what you can agree depends on local employment rules. Check with an accountant if you are unsure.
When one more person pays
Sometimes the problem runs the other way: you are short at the peak and guests leave. To decide, compare what the extra shift costs with what each recovered cover leaves you.
Use the contribution margin per cover: average ticket before tax minus the food cost of that ticket. Labour stays out of this number, because labour is what you are deciding on.
Same restaurant, Saturday: between 7 and 8 pm you count four tables, 14 covers in all, that walk out because nobody greets them.
- Extra server from 6 to 10 pm: 4 × $18 = $72
- Average ticket before tax: $28. Food cost: $9. Contribution per cover: $19
- Covers needed to pay for the shift: 72 ÷ 19 = 3.8, so 4
- If you keep those 14: 14 × 19 = $266, minus $72 = $194 more that Saturday
The rule: if the extra shift pays for itself with fewer covers than you are already losing, add it. If you have to imagine demand to justify it, do not. When the gap is no longer one night but the whole week, the question becomes when to hire. To see how many covers a day you need to cover the whole month, use the break-even tool.
Common scheduling mistakes
- Planning from the monthly average. The average hides the peaks. Look by day of the week and by hour.
- Cutting prep hours. If the afternoon cook does not finish the mise en place, the rush backs up and tables leave. Prep hours are selling hours too.
- Leaving the owner out. If you are on the grill for six hours, those hours cost something. Price them.
- Forgetting delivery. App orders come in another door but leave from the same kitchen. Add them to your plates per hour.
To see whether labour and food together leave anything over, the guide on how to make a restaurant profitable puts the whole picture together.
Do it with the calculator
Put your dishes and your average ticket into the food cost calculator, and you have the contribution per cover you need to decide whether an extra shift pays for itself.
Frequently asked questions
How many covers per hour can one server handle?
It depends on your menu, your room and your people, so measure it in your own restaurant. Count how many covers each server handles in a busy hour without ticket times creeping up, and plan with that number.
Should labour cost per cover include the owner?
Yes, if you cook or serve. Put your hours in at what you would pay someone else to do that job. Otherwise the numbers say the restaurant costs less to run than it really does.
Can I use split shifts or short shifts?
That depends on what you agree with your team and on local employment rules. Check with an accountant or your local labour authority before changing hours or contracts.
How often should I redo the schedule?
Whenever the sales pattern shifts: a new season, a new menu, delivery growing, a night that suddenly fills up. Looking at covers by hour once a month is enough to notice.