Belgian Employment Law: Notice Period and Termination Rights

The essentials: CDI, CDD, and more

Most employees in Belgium work under an open-ended contract (CDI/contract of indefinite duration). It’s the default – and your termination rights primarily flow from it. The federal Law of 3 July 1978 on employment contracts sets the framework for all worker categories. A fixed-term contract (CDD) runs until a stated end date or project milestone. Early termination of a CDD is only possible by mutual consent, for serious cause (Article 35), or in limited cases defined by law; otherwise, the breaching party typically owes damages equal to the salary for the remaining term. Concretely, ending a six-month CDD three months early on a €4,000 gross monthly package can trigger around €12,000 in damages. Beyond CDI/CDD, you’ll encounter part-time contracts (with written schedules under penalty of fines), student contracts (with a short statutory trial), and temporary agency work (triangle relationship with a licensed agency). Senior executives (cadres) are under the same post-2014 notice framework but may have tailored clauses (non-compete, bonus, garden leave) in writing.

What changes termination and notice

• Indefinite contracts can be ended by notice or by paying an indemnity in lieu of notice (Article 39). Notice is always in weeks and starts on a Monday.
• Fixed-term contracts don’t use standard notice weeks; compensation usually mirrors the salary due until the end date, unless “serious cause” applies.
• Mixed seniority (pre-2014 and post-2014) is computed in two steps and then added – a trap for expat HR teams used to single-schedule systems. Example: You joined on 1 May 2012 and are dismissed on 1 May 2026. Your notice equals (A) the "old" part accrued up to 31/12/2013 under the previous regime, plus (B) the "new" part accrued from 1/1/2014 per Article 37/2. Getting (A) wrong can cost many weeks of salary.

Paperwork and language pitfalls

Belgium’s linguistic rules bite. Your written notice must be served correctly: by registered mail, bailiff (huissier/gerechtsdeurwaarder), or hand delivery with signed receipt. The notice period starts on the Monday following the week of posting – so a registered letter mailed on Wednesday 10 April starts on Monday 22 April. Registered post costs only a few euros, but a wrong send date can add an unplanned week of salary. In Flanders, Brussels, and Wallonia, the employment contract and notices generally follow the working language of the undertaking – an extra compliance layer for multinationals. If you’re weighing a belgian employment law notice period termination for a CDI or handling an early CDD break, precision pays. A 30‑minute review can save five figures. Need tailored help fast? Find an English-speaking employment lawyer on NexLaw.

How many weeks? The post‑2014 schedule in practice

Since 1 January 2014, Belgium applies a unified schedule of notice in weeks based on seniority for both blue- and white-collar workers (Law of 3 July 1978, notably Article 37/2). For dismissals by the employer, common milestones are:

• 3 months’ service: about 2 weeks
• 6 months: about 3 weeks
• 9 months: about 4 weeks
• 1 year: 8 weeks
• 5 years: 15 weeks
• 10 years: 33 weeks
• 20 years: 62 weeks For resignations by the employee, the schedule is shorter. As benchmarks: 1 year typically equals 4 weeks; 5 years often equals 13 weeks. Always verify the precise bracket in Article 37/2 or updated official tables, especially for edge cases (e.g., 15–21 months).

Starting the clock: dates make or break deals

Notice starts on the Monday following the week the registered letter is posted. Example: Post on Friday 7 June, notice starts Monday 17 June. Hand-delivered notices start the Monday after delivery. Miss the date, and you can pay an indemnity in lieu of the extra week(s) by mistake. Notice must be in writing and respect the language rules. If you’re terminating for serious cause (Article 35), different, much stricter deadlines apply: dismissal must occur within 3 working days after the employer learns of the facts, and the reasons must be notified within the next 3 working days.

Transitional seniority and protected workers

If you started before 1/1/2014, notice is computed in two parts: (1) old rules up to 31/12/2013, plus (2) new rules from 1/1/2014 onward, then added. This hybrid calculation regularly creates 2–8 weeks’ differences worth thousands of euros. Certain categories enjoy enhanced protection (e.g., pregnant workers, staff reps, safety delegates) and trigger extra compensation—often 3–6 months of salary—if procedures are not followed. Sectoral collective agreements can add protections but cannot reduce the statutory floor. If your company is contemplating a belgian employment law notice period termination or you’re resigning from a multinational in Brussels, get the weeks right before you send the letter. A short legal memo today can save a court summons tomorrow. Need certainty? Find a lawyer on NexLaw.

The big change: probation largely abolished

If you learned Belgian HR rules before 2014, erase what you know about probation. The probation period (période d’essai/proefperiode) was abolished for standard open‑ended and fixed‑term contracts starting 1 January 2014 (Unified Status reform). That means you cannot insert a generic 3- or 6‑month trial in a CDI/CDD. Dismissal during the first weeks is still possible, but the employer must respect the statutory notice weeks set by Article 37/2 – even at 2, 4, or 8 weeks of service.

The exceptions that still matter

There are narrow exceptions where a short trial survives in practice:

• Student contracts often allow a short initial trial (commonly 3 working days) under specific rules; check the model clauses and regional templates.
• Temporary agency work features trial-like first days embedded in the sectoral rules for interim assignments. For regular employees, however, no general probation is allowed. Attempting to enforce an old template with a “6‑month trial” in a CDI can backfire legally and financially.

Practical impact on early exits

Without probation, early dismissals cost real money. Example: Hiring on 1 February, ending on 25 March triggers notice of around 3–4 weeks (depending on exact seniority), payable as work or as an indemnity in lieu. On a €5,000 gross monthly package plus a €500 car benefit (ATN), a 4‑week indemnity can top €5,500–€6,000 gross, plus social security and withholding tax. For fixed‑term contracts, early termination without serious cause typically costs the salary until end‑date – three months left on a €4,000 package means roughly €12,000. Bottom line: “Hire fast, fire fast” is not how Belgium works. For expats planning a team build‑out, budget the statutory weeks from day one. And if your situation intersects with belgian employment law notice period termination timing—as it often does in the first months—get local advice before pressing send. Need a second pair of eyes? Find a lawyer on NexLaw.

Ordinary dismissal with notice or indemnity

The most common route is a regular dismissal with notice or with an indemnity in lieu of notice (Article 39, Law of 3 July 1978). The employer does not need to prove “fault,” but must comply with the statutory weeks and service rules. Belgium also has CBA No. 109 (motivation of dismissal): on request, the employer must provide the concrete reasons for dismissal within set deadlines or risk a penalty of 2–4 weeks’ salary. For expats, CBA 109 is a game changer—document your reasons contemporaneously.

Serious cause: tight deadlines, high stakes

“Serious cause” (faute grave/dringende reden, Article 35) allows immediate termination without notice or indemnity, but the bar is high and the calendar ruthless.

• The employer must dismiss within 3 working days of learning the decisive facts.
• The reasons must be notified to the employee within the following 3 working days. Miss either step, and the dismissal reverts to an ordinary termination—often with weeks or months of pay due. Think theft, fraud, gross insubordination with proof. Borderline cases (poor performance) rarely qualify. Example: Discovering falsified expenses on Monday, waiting until next Monday to act is too late.

Economic/technical reasons and medical incapacity

Economic or technical dismissals are permitted, including collective dismissals (special federal and EU‑driven procedures apply, with information/consultation obligations and potential transition measures). For long‑term medical issues, “medical force majeure” requires a formal process via the occupational physician; recent reforms separated this from the reintegration track. Terminating without the proper medical steps risks invalidity and damages. Protected categories—pregnancy, union reps, safety delegates, whistleblowers—trigger additional penalties if mishandled, sometimes a lump sum of 6 months’ salary under federal anti‑discrimination laws. If you’re weighing a belgian employment law notice period termination on alleged serious cause or economic grounds, get a same‑day assessment of facts, dates, and proof. A short strategy call can be the difference between “zero weeks” and “33 weeks.” Need help framing the file? Find a lawyer on NexLaw.

Indemnity in lieu: what’s in the envelope

If notice isn’t worked, the employer pays an indemnity in lieu of notice equal to the remuneration for the notice period (Article 39, Law of 3 July 1978). That includes fixed salary and the monetary value of regular benefits: company car (advantage typically €150–€300/month taxable value), lunch vouchers, shift premia, regular bonus pro‑rata, and employer‑funded insurances if they are part of normal pay. Example: Monthly fixed €6,000 + car benefit €250 + meal vouchers €100 ≈ €6,350. A 15‑week notice equals roughly €21,913 gross before withholdings.

Taxes, social security, and outplacement

Dismissal indemnities are generally subject to social security (employee 13.07%) and withholding tax, though effective rates vary with your profile. Outplacement is mandatory in the “general system” when the notice (worked or indemnified) reaches at least 30 weeks. The program is 60 hours of support and is valued at 4 weeks of salary; those 4 weeks can be set off against the indemnity if properly offered. Employers must offer outplacement within short deadlines after termination (e.g., typically within 15 days); employees usually have 4 weeks to accept.

Extra compensation and disputes

• Failure to respect CBA No. 109 can add 2–4 weeks’ salary as a penalty.
• Breaching protection rules (e.g., dismissing a pregnant employee without valid grounds) can cost a lump‑sum of 6 months’ salary, on top of notice.
• If a non-compete is enforced post-termination, the employer generally owes a financial counterpart equal to at least 50% of the salary covering the clause’s duration (see Articles 65–68 for white‑collar rules), unless waived in time. For expats assessing a belgian employment law notice period termination package, sanity‑check the math: weeks, benefits, outplacement, taxes. A small miscalculation can mean €3,000–€10,000 difference. Need a precise computation sheet? Find a lawyer on NexLaw.

What CBAs can and cannot change

Sectoral collective bargaining agreements (CBAs/CCT‑CAO), published in the Belgian Official Journal (Moniteur Belge/Belgisch Staatsblad), often fine‑tune termination practice. The federal statutory notice floors (post‑2014) remain the baseline, but CBAs can improve benefits, clarify procedures, or define how certain clauses (bonus, car, outplacement) are valued in severance. Some sectors provide additional days of salary for economic downsizing or enhanced redeployment support.

Where to look and what to watch

• Check your Joint Committee (e.g., PC 200 for employees) and any company‑level CBAs.
• CBA No. 109 (motivation of dismissal) applies broadly and interacts with internal policies on performance.
• CBAs can govern non-compete mechanics, training‑cost repayment, or fixed‑term templates. Always verify publication in the Official Journal and the National Labour Council registry. A clause in a local handbook cannot undercut a sectoral CBA, and a sectoral CBA cannot undercut federal minimum rights.

Practical examples and timelines

Example: A sectoral CBA may specify that a variable bonus—averaged over the last 12 months—must be included in the indemnity base. On a €10,000 annual bonus, that can add roughly €192 per week of notice to your indemnity. Another CBA might mandate internal redeployment interviews within 10 days before any dismissal for economic reasons. In collective dismissals, EU‑inspired information and consultation steps add weeks to the timeline and can unlock transition budgets. For cross‑border teams, remember that Belgian contract law is federal; regional rules influence employment aids and languages, but not the core termination weeks. Managing a multinational restructure or navigating a belgian employment law notice period termination across multiple Joint Committees? Align HR, payroll, and counsel early to avoid conflicting obligations.

When is a non‑compete valid?

Belgian law tightly frames non‑competes for employees (Law of 3 July 1978, notably Articles 65–68; special rules for sales representatives in Article 86). A valid clause must be in writing at the latest on hiring, limited to similar activities, geographically confined to where the employer actually operates (often Belgium or part of it), and limited to 12 months. Crucially, for most white‑collar roles, the employer must pay a financial counterpart equal to at least 50% of the gross salary covering the clause if it is enforced; the employer can waive enforcement—usually within 15 days after termination—to avoid paying it.

Salary thresholds and international scope

Non‑compete enforceability depends on your gross annual salary, adjusted yearly. As a rule of thumb, below a lower threshold (around €39,000 gross/year), a standard non‑compete is generally void; between the lower and upper thresholds (roughly €39,000–€78,000), validity may hinge on sectoral CBAs; above the upper threshold, broader clauses are possible. Clauses with an international scope or tied to trade secrets/R&D have additional leeway, but must remain proportionate. Overbroad “worldwide” bans without proof of cross‑border operations invite courts to trim or annul them.

Breach, penalties, and negotiation

If you breach a valid non‑compete, the contract often sets a penalty—commonly 3 months’ salary—subject to judicial moderation. The former employer can also seek an injunction. Conversely, if the employer wants to enforce the clause, it owes the 50% counterpart (unless it waives in time). Example: On a €6,000 monthly salary, a 12‑month clause costs the enforcing employer roughly €36,000. Many disputes settle: narrowing geography, cutting duration, or swapping the clause for a tailored confidentiality/non‑solicitation package. Integrate the non‑compete into the overall exit—notice weeks, garden leave, bonus, references—before you sign. Planning a move to a competitor or hiring from one and facing a belgian employment law notice period termination scenario with a non‑compete in play? Get a fast risk map of enforceability, timing, and costs. Find a lawyer on NexLaw.