Why sabbatical leave requires financial planning
Sabbatical leave — an extended absence from work, generally between three months and one year — is not provided for under the Swiss Code of Obligations (CO) as a general employee right. In Switzerland, it almost always arises from an individual agreement, a company policy or a contractual clause. For SMEs, where each role covers multiple functions and margins are tight, the impact can be significant even when the employee receives no salary for the entire period.
The decision is not just an HR matter: it involves treasury, productive capacity, client relationships and accounting. A well-structured plan makes it possible to quantify the full cost of replacement, simulate the effect on EBITDA and liquidity, and avoid surprises regarding OASI, occupational pension (LPP) or accident insurance.
This guide outlines a practical approach for business owners, HR managers and trustees who need to assess a sabbatical leave request in the context of a Swiss SME, with criteria applicable regardless of the company's canton of domicile.
Legal framework and types of sabbatical leave
Before calculating costs, it is essential to clarify the contractual basis and the form of the leave. The most common variants in Swiss SMEs are:
Unpaid leave
The employment relationship generally remains in force; the obligation to perform work and the right to salary are suspended. The employer does not pay salary but may retain contributory obligations depending on the agreement and the pension fund. This is the most common form for periods exceeding three months.
Partially paid leave
The company continues to pay a percentage of the salary (e.g. 30–50%) in exchange for return obligations or a minimum post-leave tenure period. This requires a precise estimate of monthly cash flow.
Leave funded by accrual
The employee accumulates unused vacation, overtime or part of the 13th-month salary in an internal fund. From an accounting and tax perspective, it must be defined whether the accrual constitutes deferred remuneration or merely deferred payment.
Training or voluntary leave
Periods dedicated to training, volunteering or personal projects. These may involve partial repayment obligations in the event of early resignation, to be set out in writing before the leave begins.
The principle of equal treatment and any contractual commitments or company precedents may limit discretionary refusal. Art. 328 CO also requires the employer to protect the employee's personality. However, the company is not obliged to approve every request: the assessment must be documented, proportionate and consistent with operational needs and equal treatment among employees.
Calculating the full cost of the employee and replacement
The visible cost on the payslip represents only a fraction of the actual burden. For a Swiss SME, the full annual cost of an employee with a gross salary of CHF 80,000 typically approaches CHF 95,000–105,000, including social contributions and benefits. During sabbatical leave, the profile of these costs changes radically.
| Cost item | During unpaid leave | With internal/external replacement |
|---|---|---|
| Gross salary | CHF 0 (unless partial agreement) | Replacement salary + any allowance for the incumbent |
| OASI/IV/EO/ALV contributions | Suspended if no OASI-liable remuneration; voluntary continuation possible | Calculated on the replacement's salary |
| LPP (2nd pillar) | Depends on fund regulations; often suspension or minimum contributions | Full contributions on replacement; gap risk for incumbent |
| LAINF / LAA insurance | IP coverage ceases; NP up to day 31 without salary entitlement; conventional LAINF insurance possible | Additional premium for new insured person |
| Daily sickness allowance insurance (Krankentaggeld) | Generally not due without salary or according to policy | Active for replacement if covered under collective policy |
| Recruitment and onboarding | Nil if absorbed internally | CHF 3,000–15,000 for specialized role |
| Productivity loss (ramp-up) | Reduced output of remaining team | 30–60% efficiency in first 8–12 weeks |
| Indirect costs | Delays, overtime, operational errors | Dual management, training, supervision |
A simplified numerical example: a project manager with a full annual cost of CHF 102,000 requests six months of unpaid leave. Assuming a temporary replacement at 85% of full cost for six months (CHF 36,000), plus CHF 5,000 for onboarding and CHF 2,000 in overtime for the internal team, the direct impact amounts to approximately CHF 43,000 — equivalent to 42% of the role's annual cost, not zero.
Replacement strategies for SMEs
The choice of coverage model determines costs, risks and flexibility. The four most commonly used options:
1. Internal redistribution without dedicated replacement
The team absorbs critical activities. Low accounting cost, but high risk of burnout, quality decline and delays on other projects. Suitable only if the workload of the role on leave is limited and clients tolerate longer timelines.
2. Temporary contract (temporär)
Fixed term for the assignment. If the replacement is hired directly on a fixed-term contract (Art. 32 CO), verify that renewals do not constitute abuse of chain contracts. For agency staff (staff leasing), the Labour Act (LA) and the GAV Staff Leasing apply. Plan for termination of the relationship upon the incumbent's return and budget for the temporary employment agency (typical mark-up 15–25%).
3. Freelancer or service contract
Flexible for specific skills, but beware of false self-employment risk (Art. 328b CO). The contract must describe deliverables, organizational autonomy and absence of subordination. Recorded in accounting as external cost (account 6200 or similar in SME chart of accounts).
4. Incumbent part-time in transition
In the months before the leave, the employee trains the replacement while gradually reducing hours. This increases short-term cost (overlap) but reduces the productivity drop when the leave actually begins.
Impact on margins, liquidity and budget
To translate HR costs into management decisions, it is advisable to integrate the simulation into the cash budget and monthly income statement.
Effect on operating margin
- If the role is revenue-generating (sales, billable consulting), calculate lost or delayed revenue during the leave.
- If the role is support, quantify the increase in variable costs (subcontracting, contractual penalties, returns).
- Compare pro-forma EBITDA with and without replacement for the affected quarter.
Effect on liquidity
- Estimate additional monthly outflows: replacement salary, agency, training, any allowance for the incumbent.
- Check the current ratio: many Swiss SMEs operate with 1.5–2.5 months of available cash.
- Plan payment of unused vacation and 13th-month salary upon return, which can concentrate a significant outflow.
Simplified cash flow model (6 months)
Scenario: unpaid leave, temporary replacement, incumbent with CHF 80,000 gross salary, replacement CHF 70,000 gross.
| Month | Incumbent salary savings | Replacement cost (full cost) | Net monthly balance |
|---|---|---|---|
| 1–6 | + CHF 6,700 | − CHF 7,200 | − CHF 500 |
| 6-month total | + CHF 40,200 | − CHF 43,200 | − CHF 3,000 |
Even with unpaid leave, liquidity can deteriorate if the replacement is not cheaper than the incumbent or if fixed costs remain (company car, phone, software licenses).
Accounting treatment and tax aspects
Under Swiss ordinary accounting (Swiss GAAP FER), personnel costs are recorded when the entitlement to remuneration accrues. During unpaid leave, no salary costs arise as long as there is no performance or contractual obligation to pay. If the company maintains a share of salary or accrues amounts pre-leave, recording follows the accrual principle: the cost is allocated to the period in which the employee earns the benefit.
Allowances for leave partially funded by the employee through accrual must be distinguished from statutory vacation (minimum four weeks, Art. 329a CO). Unused vacation must as a rule be granted in the corresponding year of service (Art. 329c CO) and may generate vacation liabilities on the balance sheet; the entitlement generally expires after five years (Art. 128 CO) — an effect often underestimated upon return from sabbatical.
For tax purposes, salaries and social contributions remain deductible from the company's taxable income. Payments to the replacement follow the same rules. For freelancer contracts, verify withholding tax obligations if the recipient is subject to withholding (e.g. without domicile or tax residence in Switzerland). Recruitment and training expenses are generally deductible as operating costs.
Note for financial statements: if the sabbatical leave is linked to a structured program involving multiple employees, assess whether accruals constitute a multi-year commitment requiring disclosure in the notes to the financial statements, especially if the SME exceeds thresholds for extended financial statements or is subject to ordinary audit.
Operational checklist before approving leave
Use this list to document the decision and align HR, management and accounting:
Verify the contractual basis — company policy, internal precedents, post-leave tenure clauses and notice periods for suspension of the employment relationship.
Calculate the current full cost of the role — salary, contributions, LPP, insurance, benefits, allocated share of overheads.
Simulate at least two coverage scenarios — internal redistribution vs. temporary replacement, with ramp-up timeline.
Consult the pension fund — rules on suspension, voluntary contributions and buy-back of contribution gaps upon return.
Update the quarterly cash budget — include onboarding, agency, any allowances and concentration of vacation upon return.
Formalize in writing — duration, remuneration, return obligations, vacation treatment, confidentiality and documented handover.
Record correctly in accounting — separate costs of incumbent, replacement and transition expenses; monitor vacation liabilities.
A strategic benefit, if sustainable
Sabbatical leave can strengthen retention and employer branding for a Swiss SME, especially in competitive labour markets. However, without a rigorous estimate of full cost and operational coverage, the benefit for the employee can translate into pressure on margins, team tensions and deterioration of liquidity.
Integrating sabbatical leave assessment into the budgeting and reporting cycle — with monthly simulations and post-approval monitoring — makes it possible to combine flexibility towards employees with financial solidity. Accounting and treasury tools such as Accountex facilitate this analysis by linking personnel costs, cash flows and income statement in a single view, reducing the risk of decisions based solely on gross salary on the payslip.