What does an employee really cost (the complete formula)
Why is net salary not the true cost of an employee?
When an entrepreneur hires, the mental reference is the net salary: "I'm paying them €1,500 a month." But the real cost to the company is much higher — often double the net pay slip amount.
The gap between perceived net pay and actual company cost is one of the most common sources of error in quotes, in product cost calculations, and in budget planning. Without a complete formula, the risk is underestimating personnel costs and discovering at year-end that margins are lower than expected.
What makes up the total cost of an employee?
The annual cost of an employee includes these components:
Gross salary
This is the starting point. For a skilled worker in a manufacturing SME, a typical gross salary is between €25,000 and €32,000.
Employer social contributions
These include social security, occupational insurance, and other mandatory charges. The percentage varies by country — typically 20-35% of gross salary. On a €28,000 gross salary, a mid-range estimate of 30% means about €8,400.
End-of-service provisions
Many countries require employers to set aside a portion of salary for end-of-service benefits (severance, pension contributions, or similar). This typically adds 5-10% of gross salary to the total cost. The exact figure depends on local regulations — the key is to include it in the calculation rather than ignoring it.
Bonus months and mandatory allowances
Depending on the country and sector, employers may owe mandatory bonus payments (13th-month pay, holiday bonuses, or similar). Where applicable, these are already included in the total gross salary but must be considered when calculating the hourly cost, as they represent compensation for periods not worked.
Holidays, leave, public holidays, sick days
Hours paid but not worked. On average, an employee works about 1,560 effective hours out of roughly 1,760 contractual hours — the remaining 200 hours are holidays, leave, public holidays, and average sick days.
Indirect costs
- Mandatory training — safety, professional updates
- PPE and equipment — protective gear, work clothing
- Benefits — meal vouchers, corporate welfare, supplementary insurance
The complete formula with an example
Take a worker with a €28,000 gross salary:
| Item | Annual amount |
|---|---|
| Gross salary | € 28,000 |
| Employer social contributions (~20-35%) | € 8,400 |
| End-of-service / pension provisions (~5-10%) | € 1,960 |
| Training, PPE, other | € 600 |
| Total annual cost | € 38,960 |
Hours effectively worked
| Item | Hours |
|---|---|
| Annual contractual hours | 1,760 |
| – Holidays | –160 |
| – Public holidays and leave | –80 |
| – Average sick days | –40 |
| Effective hours | 1,480 |
Using 1,480 effective hours (a conservative figure accounting for sick days and contingencies):
Hourly cost = € 38,960 / 1,480 = €26.32/h
An employee with a net salary of about €1,400/month costs the company over €26 per hour. Not the €14-15 you'd get by dividing net pay by hours worked.
Why is this number essential?
The real hourly cost is the foundation for:
- Calculating the full cost of a product — direct labor is often 30-40% of manufacturing cost
- Making accurate quotes — underestimating personnel cost means selling at a loss without knowing it
- Evaluating new hires — knowing the real cost of a person helps decide if the investment is sustainable
- Comparing make-or-buy — is it better to produce in-house or outsource?
When revenue grows but profit doesn't, one frequent cause is precisely an underestimated personnel cost in pricing calculations.
How to use the formula in practice
1. Calculate the annual cost for each employee category — you don't need a per-person calculation. Grouping by role (workers, office staff, sales) with an average gross salary is enough.
2. Calculate effective hours per category. A production worker's hours differ from a sales rep's. The worker is on the line; the sales rep has travel, trade shows, and non-directly-billable activities.
3. Divide annual cost by effective hours. The result is the hourly cost to use in all subsequent calculations.
4. Update at least once a year. Every contract renewal, change in social contributions, or shift in average hours worked changes the hourly cost. An up-to-date figure is essential for effective management control. A fractional controller can manage this update systematically.
The most expensive mistake
Many SMEs calculate personnel cost by dividing "what I pay them" by hours at the office. The result is an hourly cost underestimated by 40-60%. This error propagates into every quote, every margin, and every pricing decision.
Correcting this calculation is the first step — and often the most impactful one — toward aligning perception with reality. Salaries are also a fixed monthly cost that impacts cash flow, regardless of order volume. It's one of the 5 essential numbers on which to build a management dashboard.
The cash flow guide for SMEs explains how to manage the impact of personnel costs on business liquidity.
Want to calculate the real cost of personnel in your company? Get in touch for a no-commitment conversation, or learn about our strategic consulting.