Sales Per Labor Hour Formula: How to Calculate It (With a Worked Example)

Sales per labor hour (SPLH) is one of the fastest ways to tell whether a shift was staffed well or not. Here's the formula, a real example, and the mistakes that quietly make the number lie to you.

The formula

Worked example

$4,200 ÷ 28 hours = $150 in sales generated for every labor hour scheduled that day. On its own that number means little — it only becomes useful once you compare it against your own store's typical range.

What counts as a "good" number?

There's no single universal benchmark here, and treating one as gospel is a common mistake — SPLH swings hard by category. A jewelry counter and a grocery store will never land on the same number, because average transaction size drives this metric as much as staffing does. The useful comparison is almost always internal: this Saturday against last Saturday, this month against the same month last year, one location against another inside your own business.

Where the number quietly goes wrong

• Scheduled hours instead of actual hours. If someone clocks in late, leaves early, or picks up an extra shift, your schedule and your actual labor hours drift apart — and the schedule is the wrong one to divide by.
• Leaving out non-selling labor. Time spent on receiving, cleaning, or admin work still counts as labor hours even though it doesn't directly drive that day's sales — excluding it inflates the number artificially.
• Comparing across categories without adjusting. A high-ticket day (holiday sales, a big restock) will spike SPLH even if staffing didn't change — read spikes and dips in context, not in isolation.
• Tracking it in isolation from labor cost %. SPLH tells you productivity; it doesn't tell you whether payroll is actually within budget. The two need to be read together.