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%. The 13th-month bonus and double holiday pay (~92% of one month's salary) are mandatory across nearly all joint committees, 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
Sources
Statutory rates and rules verified against the following authorities. We update this page when rates change.