Lohnnebenkosten (Employer On-Costs)
Lohnnebenkosten are the mandatory employer contributions added to an employee's gross salary: AHV/IV/EO social insurance (8.7%), accident insurance (SUVA or private), unemployment insurance (UVG/Assurance-chômage), and cantonal family allowances. They are not optional and vary by location and industry.
Lohnnebenkosten — employer on-costs — are the social insurance contributions and statutory insurance premiums you must pay as an employer on top of the salary you agree with an employee. They are legally mandated, not negotiable, and add roughly 10–15% to your wage bill depending on canton and industry.
Unlike bonuses or benefits, on-costs are fixed by law. You cannot reduce or waive them. Understanding them is essential for budgeting headcount and calculating true employment cost.
What Counts as Lohnnebenkosten?
The main components are: AHV/IV/EO (old-age, disability, survivor, and unemployment insurance at 8.7% employer contribution), accident insurance (mandatory for most employees under SUVA or private insurers), and cantonal family allowances (Familienausgleichskasse). Some cantons also require Berufsbildungsfonds contributions.
The exact rate depends on your location and whether your employee is covered by a collective labor agreement (GAV). A Zurich-based manufacturer may pay a different rate than a Valais-based service firm.
- AHV/IV/EO: 8.7% employer contribution (federal rate, non-negotiable)
- Accident insurance (SUVA): typically 1–4% depending on risk class and industry
- Unemployment insurance (UVG): typically 0.5–1.1% by canton
- Family allowances: varies by canton (0–4%)
- GAV provisions may impose additional contributions (e.g., pension top-ups)
- Apprentice training levies in some cantons
When On-Costs Matter: Budgeting and Hiring Decisions
On-costs appear the moment you hire. If you offer a 100,000 CHF gross salary, expect to budget an additional 10,000–15,000 CHF in on-costs annually. This is non-discretionary spending and must be factored into headcount budgets and salary planning.
Small employers often underestimate on-costs when calculating ROI on a new hire or when comparing the cost of a full-time employee versus a freelancer or part-time contractor (who may have different insurance obligations).
- Budget on-costs at hiring stage: add 10–15% to gross salary for cash-flow planning
- On-costs are paid directly to insurers and tax authorities, not to the employee
- Different rates apply to part-time and full-time employees in the same role
- Apprentices and trainees have lower on-cost rates than skilled workers
- Temporary staff or contractors may have different contribution schedules
- Annual cost-of-living adjustments to AHV/IV/EO are set by the federal government
Common Mistake: Forgetting On-Costs in the Salary Offer
The most frequent error is negotiating a 'total compensation' figure without separating gross salary from on-costs. A hiring manager may promise 80,000 CHF 'all-in' and only later discover the employer owes an additional 8,000–12,000 CHF in contributions.
Swiss law (ArG, AHV/IV/EO law) requires you to pay on-costs regardless of how the salary is framed. You cannot shift this burden to the employee or reduce it by contract. If unsure about your canton's rates, contact your local AHV office or a payroll specialist.
- Never quote or budget only gross salary without adding on-costs separately
- On-costs are the employer's legal responsibility, not deductible from the employee's pay
- Rates vary by canton and industry—check with your AHV/IV office or payroll provider
- Collective agreements (GAV) may impose higher minimums; verify before hiring
- Review on-cost obligations before signing a multi-year employment contract
- A payroll accountant or HR consultant can confirm exact rates for your location and role
Frequently asked questions
- Are Lohnnebenkosten the same as the employee's social insurance contributions?
- No. Employees also contribute to AHV/IV/EO, accident insurance, and unemployment insurance—these are deducted from their salary. Lohnnebenkosten are the employer's separate, parallel contribution. Both exist and both are mandatory.
- Can I reduce on-costs by hiring a part-time employee at 50% Pensum instead of full-time?
- The percentage of Pensum is proportional, but the *rate* of on-costs does not change. A 50% employee still incurs the same insurance rates (8.7% AHV/IV/EO, etc.), just applied to half the salary. On-costs scale with total earnings, not flexibility.
- Do I owe Lohnnebenkosten for a freelancer or contractor?
- No. Independent contractors are responsible for their own social insurance. However, Swiss law sets strict criteria for who qualifies as truly independent. Misclassifying an employee as a contractor can trigger back-payment demands from tax and insurance authorities.
General information for Swiss employers, not legal advice. Have a lawyer confirm anything with legal consequences.