TL;DR, Hiring in Belgium
- Fully-loaded employer cost: ~27% ONSS/RSZ + 13th month + double holiday pay
- Double holiday pay (~92% of monthly salary) paid before summer leave, non-negotiable
- Indexation (automatic salary indexing to inflation) applies sector-wide, budget for annual jumps
- Joint committee (Paritair Comité / Commission Paritaire) sets sector minima for salary, leave, and notice
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Statutory employer costs in Belgium
In Belgium, employer social security (ONSS/RSZ) is roughly 25% on gross salary, plus sector-specific levies (employment fund, training fund) that bring the total to ~27%. Double holiday pay (~92% of one month's salary) is universally owed and included in this estimate, while the 13th-month year-end premium depends on the joint committee or CBA and is not added, and automatic wage indexation links salary increases to the health index, recent years have seen 5–11% jumps in a single round.
| Contribution | Employer rate | Notes |
|---|---|---|
| ONSS/RSZ (employer social security) | ~25% | Base rate after the structural reduction; varies marginally by salary band and sector. |
| Sector-specific employer levies | 1–3% | Joint-committee funded training, closure, and unemployment funds. |
| Wage withholding tax (bedrijfsvoorheffing / précompte professionnel) | withholding | Employer deducts and remits, not an employer cost per se but adds administrative burden. |
Mandatory employee benefits
Beyond statutory contributions, Belgium law requires the following benefits the employer must fund.
- 13th month (prime de fin d'année)
- One extra month of salary paid in December, mandatory in most joint committees (CP200, CP218, CP336).
- Double holiday pay (pécule de vacances)
- ~92% of one month's gross paid before the summer holidays, on top of normal vacation pay.
- Meal vouchers (titres-repas)
- Up to €8/working day; €6.91 employer + €1.09 employee, quasi-mandatory in tech and white-collar packages.
- Annual leave
- 20 days statutory + 10 public holidays. CCT/CAOs commonly add 5–12 extra days.
Termination, notice and severance
Probation
Probation periods were abolished in 2014, replaced by reduced notice periods during the first months of employment.
Notice period
Tenure-stepped under the Unified Status Act (2014). Examples: 1 week notice in months 1–3, 4 weeks at 1 year, 15 weeks at 5 years, 62 weeks at 20 years.
Severance
Notice or indemnity in lieu (gross pay × notice weeks). No additional severance for ordinary dismissal, but 'manifestly unreasonable dismissal' under CCT 109 triggers 3–17 weeks' pay.
Common compliance pitfalls
- Automatic indexation surprises foreign employers, when the health index crosses the pivot threshold, every salary in covered sectors jumps overnight. Plan for this in budgets, not after the fact.
- Meal vouchers and eco-cheques are heavily tax-advantaged and effectively expected, offers without them feel underpriced to Belgian candidates even when total comp matches.
- Joint committee classification matters, CP200 (white-collar generic) vs CP218 (commerce) vs CP336 (liberal professions) have meaningfully different minima, 13th-month rules, and notice. Confirm with the EOR.
- Brussels regional language laws, employment contracts and HR communications must be in French for French-speaking employees, Dutch for Dutch-speaking, or German for the eastern cantons. Bilingual EN-only contracts are not legally valid.
Frequently asked questions
EOR platform fees for Belgium range from $199–$699 per employee per month. On top, ONSS employer contributions add ~27% to gross salary, plus double holiday pay (~7.7%, included here), a sector-dependent 13th-month premium (~8.3%, not included) and the meal-voucher employer share. Fully-loaded cost is typically 50–55% above base salary.
Belgian salaries in most sectors are automatically indexed to the smoothed health index. When the index crosses a pivot threshold, salaries increase by ~2% (CP200) or by the full index jump on 1 January (other committees). In 2023, indexation reached 11% in a single round. Budget for this.
Not statutorily, but they are quasi-universal in white-collar offers and codified into many joint-committee agreements. Maximum €8/working day with up to €6.91 employer share, tax-free for the employee and deductible for the employer.
No, not by default. Employment contracts must be drafted in the official language of the region: French (Wallonia), Dutch (Flanders), or German (eastern cantons). Brussels allows French or Dutch depending on the employee's language. A bilingual or EN-translated version can be provided alongside, but the legally valid version is the local-language one.
Sources
Statutory rates and rules verified against the following authorities. We update this page when rates change.