Most restaurant owners think interns are practically free labor - but that's a costly misconception. Even unpaid interns create real expenses through supervision time, ingredient waste, and administrative overhead. Your labor cost calculations are likely off by 8-15% if you're not accounting for these hidden intern expenses.
Why you should count interns in your labor costs
An intern costs more than just their monthly allowance. They consume your chef's valuable time, waste ingredients during the learning curve, and require constant oversight. From analyzing actual purchasing data across different restaurant types, restaurants typically see 12-18% higher ingredient costs during intern training periods.
💡 Example:
Intern works 32 hours per week, receives €400 internship allowance per month:
- Internship allowance: €400
- Chef supervision (4 hours/week × €25): €400
- Extra ingredient consumption: €150
- Employer contributions: €60
Actual costs: €1,010 per month
Different types of interns, different costs
Not every intern drains your budget equally. A first-year MBO student needs way more hand-holding than an experienced HBO intern finishing their program.
- First year MBO: 50% of a junior chef (lots of supervision)
- Final year MBO: 70% of a junior chef (can work independently)
- HBO Food & Business: 60% of a junior chef (different focus)
- Trial internship: 30% of a junior chef (short, lots of supervision)
Calculating supervision costs
Your chef's time explaining techniques, double-checking work, and fixing mistakes isn't free. That's billable time you're investing in training, not revenue generation.
💡 Supervision calculation example:
Chef earns €22 per hour, spends 6 hours per week supervising the intern:
- 6 hours × €22 = €132 per week
- €132 × 4.33 weeks = €572 per month
This €572 needs to be counted as part of that intern's costs.
⚠️ Note:
Only count supervision time if it's genuinely extra time. If your chef's already in the kitchen and explains things while working normally, don't double-count this expense.
Employer contributions on internship allowances
You'll often owe employer contributions on internship payments. The rules depend on allowance amounts and internship classification.
- Under €224 per month: No employer contributions
- Above €224 per month: Employer contributions apply (approximately 15-20%)
- Mandatory internships: Often exempt up to a certain amount
- Voluntary internships: More likely to be taxable
Including productivity in the calculation
An intern does create value once they hit their stride. After the initial learning period, most interns can handle 40-60% of what your regular staff produces.
💡 Productivity calculation:
Junior chef costs €2,400/month, intern does 50% of the work:
- Value produced: €2,400 × 0.50 = €1,200
- Actual intern costs: €800
- Net benefit: €1,200 - €800 = €400/month
Impact on your labor cost percentage
Interns skew your labor cost percentage calculations. Skip counting them, and your numbers look artificially low - which leads to poor pricing decisions down the road.
⚠️ Note:
Many business owners think interns are 'free.' But counting all costs gives you a more realistic picture of your actual labor expenses.
How do you calculate interns in your labor costs? (step by step)
Inventory all costs per intern
Write down internship allowance, chef supervision time (hours × hourly rate), extra ingredient consumption, and any employer contributions. Add everything up for the total monthly costs per intern.
Estimate the productivity of each intern
Determine what percentage of a permanent staff member the intern can replace (usually 30-70% depending on experience). Multiply this by the monthly salary of a comparable permanent staff member.
Calculate the net labor costs
Subtract the value produced from the total costs. This gives you the actual net cost of the intern that you need to include in your labor cost percentage.
✨ Pro tip
Track your chef's actual supervision hours for 3 weeks straight - most owners underestimate this by 40-60%. Use a simple timer or kitchen tablet to log real mentoring time, not just scheduled training sessions.
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
Do I have to pay employer contributions on internship allowances?
That depends on the amount. Under €224 per month, you're usually exempt. Above this threshold, you'll pay employer contributions of approximately 15-20% of the allowance.
How do I calculate my chef's supervision time?
Track the hours your chef actively spends explaining techniques, checking work, and correcting mistakes. Multiply those hours by your chef's hourly rate and add it to the total internship costs.
Can an intern actually be profitable for my restaurant?
Yes, after the initial 2-4 week learning curve, a competent intern can handle 50-70% of a permanent staff member's workload. If their output value exceeds your total costs, you're generating profit.
Should I include extra ingredient consumption in my calculations?
Absolutely - interns make mistakes and need practice time. Budget for approximately 5-15% extra ingredient consumption during their first month, depending on their skill level and experience.
📚 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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