How to Calculate and Control Your Labor Cost Percentage

Labor is usually the largest controllable cost in a small business — and the one most owners only look at after the books close, when it's too late to do anything. Here's how to calculate labor cost percentage, what's "good," and how to control it in real time instead of in hindsight.

The formula

Labor cost percentage is simple:

Labor Cost % = (Total Labor Cost ÷ Total Revenue) × 100

"Total labor cost" is more than wages. To do it honestly, include gross wages, overtime premiums, payroll taxes (your employer share), and benefits. A lot of owners track only base wages and then wonder why the real number is higher than they thought.

Example: if you did $40,000 in revenue last month and your fully-loaded labor was $11,000, your labor cost percentage was 27.5%.

What's a "good" number?

It depends heavily on your industry — there is no universal target:

• Full-service restaurants: often 30–35% of sales (food + labor "prime cost" usually targeted under ~60%).
• Quick-service / cafes: often 25–30%.
• Retail: frequently 10–20% of sales.
• Service businesses (salons, clinics, trades): can run much higher — 40%+ — because labor is the product.

The point isn't to hit someone else's benchmark. It's to know your baseline and notice when you drift off it.

Why month-end is the wrong time to find out

Here's the trap. If you only calculate labor cost when you close the books, you learn that last month was bad after last month is over. You can't un-schedule the overtime. You can't un-staff the slow Tuesday. The number is a post-mortem, not a steering wheel.

A labor cost report you read after payroll runs is a history lesson. A labor cost report you read while building next week's schedule is a decision.

The four levers you actually control

• Overtime. The most expensive labor you buy, at 1.5×. The fix is catching it before you publish — knowing that adding Jordan to Sunday pushes him to 46 hours, while there's still time to assign someone else. Overtime that surprises you is a scheduling-visibility failure, not a people failure.
• Coverage vs. demand. Overstaffing a slow lunch and understaffing a busy Friday is the same total hours producing wildly different revenue. Match the schedule to when money actually walks in.
• Buddy punching and time drift. Minutes of unauthorized punch-in add up. GPS clock-in removes the temptation.
• Time-card accuracy. Manual rounding and forgotten clock-outs quietly inflate payroll. Clean, rounded, reviewed entries keep the number honest.

Sales per labor hour — the operator's version

For businesses with a point-of-sale, the sharper metric is Sales per Labor Hour (SPLH): revenue ÷ hours worked. It answers "is each hour I'm paying for producing enough?" and it's easy to track daily. When SPLH drifts down, you're either overstaffed or sales softened — either way, you want to know this week, not next quarter. Restaurants connected to a POS can watch this automatically; we pull it from Toast for exactly this reason.

The habit that fixes it

Controlling labor cost isn't a spreadsheet skill, it's a timing habit: look at projected labor while you build the schedule, not after you pay it. Tools that show you a running labor total and flag overtime before you hit "publish" turn the number from a regret into a lever. That single shift in timing is worth more than any benchmark.