Calculating waste per employee reveals exactly which shifts drain your profits and by how much. Most restaurant owners sense there's waste happening but can't pinpoint the real cost. Track this per person and you'll spot the patterns that are quietly eating your margins.
Why calculate waste costs per employee?
Each team member handles ingredients differently. Some are naturally careful, others toss food at the first sign of doubt. Track this data per person and shift, and you'll uncover expensive patterns hiding in plain sight.
💡 Example:
Restaurant with 4 chefs on the evening shift:
- Chef A: €12 waste per shift
- Chef B: €28 waste per shift
- Chef C: €8 waste per shift
- Chef D: €35 waste per shift
Difference between best and worst: €27 per shift
Run 6 shifts weekly? That's €140 per week difference between your most and least wasteful chef. Over a year, that's €7,280 walking straight into the bin.
What counts as waste?
Don't count everything that hits the trash. Focus on these costly categories:
- Overproduction: Too much mise-en-place prepared
- Spoilage: Ingredients past date or gone bad
- Preparation errors: Failed dishes, incorrectly cut items
- Portion excess: Too generous portions, too much garnish
⚠️ Note:
Trim loss (bones, peels) isn't waste. That's normal prep work. Only count what could've been avoided.
The formula for waste costs
Start with this basic calculation:
Waste costs per employee = Total waste value / Number of employees on shift
But the real insights come from tracking it over time:
💡 Example calculation:
Saturday evening, 3 chefs on shift:
- Discarded: 500g beef (€18/kg) = €9.00
- Discarded: 200g shrimp (€24/kg) = €4.80
- Failed pasta dishes: 3 portions at €3.20 = €9.60
- Over-portioning meat: estimated €8.00
Total: €31.40 / 3 chefs = €10.47 per chef
Waste per shift vs. per hour
You've got two calculation methods:
- Per shift: Total waste / number of people
- Per worked hour: Total waste / total hours worked
The hourly method gives fairer comparisons if your team works varying hours. From years of working in professional kitchens, I've seen how part-time staff can skew the numbers if you only calculate per shift.
💡 Example per hour:
Same €31.40 waste, but:
- Chef A: 8 hours worked
- Chef B: 6 hours worked
- Chef C: 4 hours worked (part-time)
Total: 18 hours
€31.40 / 18 hours = €1.74 waste per worked hour
Benchmark: what are normal waste costs?
Typical waste costs across restaurants:
- Good: €5-12 per employee per shift
- Average: €15-25 per employee per shift
- Problematic: €30+ per employee per shift
Fine dining operations often run higher due to premium ingredients and exacting standards.
How to track this in practice
Most kitchens start with a simple clipboard system. At shift's end, record:
- What was thrown away
- Estimated value (purchase price)
- Reason (spoilage, error, overproduction)
- Who was on shift
⚠️ Note:
Keep it educational, not punitive. Start charging people for waste and they'll hide it instead of reporting it.
Digital tools like KitchenNmbrs can automate the per-employee calculations and track trends over time. No more manual math, just clear data on which shifts cost you most.
How do you calculate waste costs per employee?
Record all waste per shift
At the end of each shift, note what was thrown away. Estimate the purchase value per item. Also note how many people worked and how many hours.
Add up the total waste value
Sum all discarded ingredients at purchase price. Don't forget to include failed dishes and over-portioning.
Divide by number of employees or hours worked
For a fair comparison: divide by total hours worked. For a quick check: divide by number of people on shift.
✨ Pro tip
Track your waste costs for 14 consecutive days to establish baseline patterns. You'll often find Tuesday prep shifts waste 40% less than Friday service shifts due to time pressure differences.
Calculate this yourself?
In the KitchenNmbrs app you can do this in just a few clicks. 7 days free, no credit card.
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Frequently asked questions
Should I count trim loss as waste?
No, trim loss is normal prep work. Bones, peels, and skin are expected byproducts. Only count avoidable waste: spoilage, preparation errors, and overproduction.
What if someone works much longer than others?
Calculate per worked hour instead of per person. Divide total waste by total hours worked across all staff for a fairer comparison.
How do I estimate the value of discarded food?
Use your actual purchase prices. A 200g piece of salmon at €28/kg costs €5.60 in waste. Estimate conservatively—you're tracking trends, not exact losses.
What are normal waste costs per shift?
€5-12 per employee per shift is excellent control. €15-25 is industry average. Anything above €30 per person per shift signals serious profit drain.
How do I prevent employees from hiding waste?
Make it about learning, not blame. Discuss patterns with the whole team without singling anyone out. Create a culture where reporting waste helps everyone improve.
Should I track waste differently for prep vs. service shifts?
Yes, prep shifts often have higher trim waste that looks like avoidable waste. Service shifts show more portion control and cooking error patterns.
📚 Sources consulted
- EU Verordening 852/2004 — Levensmiddelenhygiëne (2004) — Official source
- EU Verordening 853/2004 — Hygiënevoorschriften voor levensmiddelen van dierlijke oorsprong (2004) — Official source
- EU Verordening 1169/2011 — Voedselinformatie aan consumenten (2011) — Official source
- NVWA — Hygiënecode voor de horeca (2024) — Official source
- NVWA — Allergenen in voedsel (2024) — Official source
- Codex Alimentarius — International Food Standards (2024) — Official source
- FSA — Safer food, better business (HACCP) (2024) — Official source
- BVL — Lebensmittelhygiene (HACCP) (2024) — Official source
- Warenwetbesluit Bereiding en behandeling van levensmiddelen (2024) — Official source
- WHO — Foodborne diseases estimates (2024) — Official source
Food Standards Agency (FSA) — https://www.food.gov.uk
The HACCP standards shown in this application are for informational purposes only. KitchenNmbrs does not guarantee that displayed values are current or complete. Always consult the FSA or your local authority for the latest regulations.
Written by
Jeffrey Smit
Founder & CEO of KitchenNmbrs
Jeffrey Smit built KitchenNmbrs from 8 years of hands-on experience as kitchen manager at 1NUL8 Group in Rotterdam. His mission: give every restaurant owner control over food cost.
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