Start with sales by hour
Pull a report of transactions and revenue broken out by hour, across several weeks. Patterns show up fast — a slow first hour after opening, a lunch spike, a dead stretch mid-afternoon.
Overlay labor against sales
Compare labor cost as a percentage of sales, hour by hour, not just for the whole day. A day can average a healthy labor percentage while still being badly overstaffed for three hours and understaffed for two.
- Pull sales-by-hour for at least four weeks
- Compare against current scheduled hours
- Flag hours running high labor percentage
- Flag hours where service visibly suffers
Account for day-of-week and seasonality
A Tuesday and a Saturday are different businesses in disguise. Build the schedule around day-of-week patterns first, then adjust for known seasonal swings using last year's same period as a reference.
Don't schedule to the average
An average masks the peak. If lunch is reliably double the surrounding hours, staff for the peak, not for the day's average, or service quality drops right when the most customers are watching.
Watch for the cost of understaffing
Understaffing doesn't show up as a labor cost — it shows up as slower service, abandoned carts, and lower averages during rushes. If sales-per-labor-hour is falling during your busiest window, that's a sign to add, not cut, staff.
Use forecasting tools where available
Some POS and scheduling integrations forecast expected sales based on history and let you build schedules against the forecast rather than a static template. This is worth setting up once volume is steady enough to trust the pattern.
Revisit the schedule quarterly
Staffing built around last year's pattern goes stale as the business grows or a season shifts. A quarterly check against fresh data keeps the schedule matched to current demand instead of history.
Bring the team into it
Sharing the sales-by-hour pattern with staff — not just handing down a schedule — helps them understand why hours were cut or added, and reduces pushback when a shift changes.