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8 min read·Last updated: 2026-07-22

Before you hire: simulate the full cost of an employee on margins, OASI and liquidity

A structured simulation of labour costs helps you avoid surprises on social contributions, operating margin and cash flow. Here's how to calculate it correctly in the Swiss context.

Why gross salary alone isn't enough to decide

Hiring an employee in Switzerland means committing resources well beyond the agreed monthly salary. Between mandatory social contributions, insurance, optional benefits and onboarding costs, the full cost to the employer can exceed 20–30% of annual gross salary, depending on the employee's age, canton and chosen occupational pension plan.

For an SME, the decision should be made through three complementary lenses: the operating margin (how much additional revenue is needed to cover the new cost), the sustainability of OASI and pension contributions (non-negotiable employer shares), and liquidity (sufficient cash in the first months, when the new hire creates value but not yet full revenue).

This guide walks you through a concrete simulation, with reference figures updated for 2026, to assess whether the hire is economically sustainable before publishing the job offer or signing the employment contract.

From gross salary to full cost for the employer

In accounting, personnel costs are recorded gross of employer social contributions. Here are the typical components of a full-time role in a Swiss SME:

Cost item Calculation basis Employer share (indicative)
Monthly gross salary Employment contract 100% — starting basis
OASI / DI / IC OASI-assessable gross salary (no cap) 5.3% (half of 10.6% total)
Unemployment insurance (UI) Salary up to CHF 148'200/year 1.1% (half of 2.2% total)
Occupational pension (LPP, 2nd pillar) Coordinated salary (from CHF 22'680) 3.5–9% depending on age and plan (legal minimum employer share)
Accident insurance (LAINF) Salary, occupational risk 0.5–3% (sector and deductible)
Cantonal family compensation fund Salary (if not exempt) 0.3–1.5% (varies by canton)
Health insurance (optional) Agreed annual premium CHF 100–400/month depending on coverage
13th monthly salary / bonus Custom or statutory provision +8.33% on annual cost if applicable

In short: on a gross salary of CHF 6'000 per month, the annual cost to the employer typically ranges between CHF 82'000 and CHF 95'000, including mandatory contributions and insurance. The exact margin depends on the employee's age and pension plan adopted.

OASI and pension contributions: what you cannot overlook

Social contributions are the line item most often underestimated by those planning their first hire. In Switzerland, employer and employee each pay half of OASI, DI, IC and UI through quarterly or monthly declarations to the OASI compensation office.

OASI, DI and IC

The combined rate is 10.6% on OASI-assessable salary (2026), split equally. For the employer, this means 5.3% on every franc of salary, with no maximum cap. Unemployment insurance (UI), however, applies up to the annual maximum of CHF 148'200; above this threshold, the standard 1.1% UI contribution is not due.

Accounting is typically recorded on 5xx accounts (salary and social contribution expenses) with credits to 2xx accounts (liabilities to social security institutions). Accountex lets you map these items automatically to simplify quarterly closing.

LPP and coordinated salary

The LPP obligation applies from an annual salary of CHF 22'680 (2026 threshold). The coordinated salary — the basis for pension contribution calculation — equals OASI-assessable salary minus CHF 26'460, with a minimum of CHF 3'780. For a 35-year-old employee, the employer's legal minimum share on coordinated salary is 5% (half of the 10% total for the 35–44 age bracket); with risk contributions and above-minimum plans, the percentage can be higher.

Before hiring, ask your occupational pension institution for an age-band simulation: the difference between a 25- and a 55-year-old employee can exceed CHF 500 per month at the same salary.

Numerical example: simulating a hire step by step

Imagine a services SME in Ticino evaluating the hire of a full-time sales representative with a monthly gross salary of CHF 5'500 (CHF 66'000 annually), aged 32, with no 13th monthly salary in the first year:

Item CHF/month CHF/year
Gross salary 5'500 66'000
OASI / DI / IC (5.3%) 292 3'498
UI (1.1%) 61 726
LPP (~3.5% employer share on coord. salary) 115 1'384
LAINF (office, ~0.8%) 44 528
Family compensation fund (1.6% in Ticino) 88 1'056
Onboarding costs (amortised over 12 months) 250 3'000
Full monthly cost ~6'350 ~75'792

The full cost exceeds gross salary by approximately 15%. Onboarding costs include recruiting, onboarding, IT equipment and initial training. If you plan a 13th monthly salary from year two, add CHF 5'500 annually to the budget.

Impact on margins: does the new hire pay for itself?

Labour cost should be compared with expected marginal contribution, not with the company's total revenue. Use this formula for break-even:

Minimum revenue required = Full annual cost ÷ Contribution margin (%)

In our example, with a full cost of CHF 75'792 and a 40% contribution margin (typical for B2B services), you need at least CHF 189'480 in additional annual revenue — approximately CHF 15'790 per month — just to cover the new position, without generating additional profit.

If the sales rep is expected to manage an existing portfolio rather than acquire new clients, verify that margins on those contracts are not eroded by discounts or pricing pressure linked to increased administrative workload. A common mistake is hiring to 'relieve the owner's workload' without quantifying incremental revenue: in that case, cost should be compared with the value of the owner's freed-up hours multiplied by their effective hourly rate.

40%

Contribution margin

CHF 189'000

break-even revenue

30%

Contribution margin

CHF 253'000

break-even revenue

20%

Contribution margin

CHF 379'000

break-even revenue

Liquidity: can cash flow withstand the first months?

Operating margin and liquidity are not the same thing. Even a hire that makes economic sense on the P&L can strain cash flow if you do not plan outflows in the first 3–6 months.

  • 1.Reduced productivity period: in the first 60–90 days the new hire produces less than the cost incurred. Plan for a 'ramp-up deficit' of CHF 8'000–15'000 for qualified positions.
  • 2.Holiday and 13th salary provisions: under Swiss ordinary accounting, untaken holiday and the 13th monthly salary must be provisioned monthly. On CHF 66'000 gross, holiday provisions (approximately 8.33%) and bonus reserves add CHF 700–1'100 per month to the real financial burden.
  • 3.Quarterly OASI payments: if you go from zero to one employee, the quarterly payment to the OASI compensation office increases significantly from the first full quarter. Keep at least one quarter's worth of contributions in cash before confirming the hire.
  • 4.Safety threshold: as a prudent rule, available cash should cover at least 3 months of full cost for the new position in addition to the company's ordinary fixed expenses.

Alternatives: part-time, internships and temporary work

If the simulation reveals insufficient margin or fragile liquidity, consider intermediate models before abandoning the hire:

Employment at 50–80%

Social contributions are calculated pro rata on actual salary, but fixed costs (health insurance, payroll administration) remain partly unchanged. The full hourly cost is often higher as a percentage than for full-time, but the financial risk is lower.

Fixed-term or apprenticeship contract

A fixed-term contract ends automatically at the agreed expiry date and allows you to test the cost/revenue relationship without an open-ended commitment; abusive chaining without objective grounds is prohibited under the Code of Obligations (CO). Apprentices are subject to the same OASI/DI/IC and UI contributions as employees (from 1 January following their 17th birthday) and receive lower statutory wages: useful for technical roles with training investment.

Pre-hire checklist for business owners and fiduciaries

Before publishing the job ad or submitting the contract to the employee, verify these points with your advisor or directly in Accountex:

Documented full-cost simulation

Gross salary + employer contributions + insurance + onboarding costs, with annual and monthly figures.

Break-even on contribution margin

Incremental revenue required calculated with the actual sector margin, not a generic estimate.

6-month liquidity test

Cash projection including ramp-up, quarterly OASI payments and holiday/13th salary provisions.

Updated chart of accounts

5xx accounts configured for salaries, social contributions and provisions; LPP plan communicated to the pension institution.

Contract clauses aligned with budget

Probation period, work percentage, any 13th monthly salary and benefits consistent with the approved simulation.

Hiring with the numbers in hand

A well-planned hire strengthens the business; a decision based solely on gross salary can erode margins and strain liquidity within the first quarters. Simulating the full cost — with OASI, LPP, insurance and provisions — is a prerequisite for every informed decision.

With Accountex you can integrate personnel management into ordinary accounting: salary recording, contribution calculation, provisions and margin reports to verify in real time whether the new employee is meeting the business plan assumptions. Before signing, simulate; after onboarding, monitor.

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