Opzegtermijn in België berekenen: ontslag door de werkgever of zelf ontslag nemen
Estimates only, not financial advice. What you type stays on your device. Checked against sources on 20 Oct 2026.Sinds het eenheidsstatuut van 2014 hebben arbeiders en bedienden dezelfde opzegtermijn, in weken volgens de anciënniteit. Na 7 jaar dienst geeft de werkgever 24 weken opzeg; wie zelf ontslag neemt, geeft hoogstens 13 weken. Voor contracten vanaf 1 juni 2026 is de opzeg begrensd op 52 weken. De termijn begint op de maandag na de week van de kennisgeving; de opzegvergoeding is per week het maandloon × 3/13.
2026 · Rates and rules read from the sources listed on this page (the earliest on 20 Oct 2026); they may have changed since.
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This calculator works out the statutory notice period (délai de préavis, opzegtermijn) for an open-ended Belgian employment contract that began on or after 1 January 2014, from the tables of the SPF Emploi, Travail et Concertation sociale, the federal labour ministry, read on 20 October 2026. The rules may have changed since.
Seniority. Seniority counts from the first day of work to the day before the notice starts, "de date à veille de date". The notice starts on the Monday after the week in which it was notified. An employer must notify by registered letter, which takes effect on the third working day after it was sent, or by bailiff.
Dismissal by the employer. One week under 3 months, then 3, 4 and 5 weeks, 6 weeks from 6 months, 12 weeks at 2 years, 18 weeks at 5 years, 33 weeks at 10 years, and 3 more weeks for each year up to 60 weeks at 19 years. Two changes in 2026: contracts begun from 1 June 2026 are capped at 52 weeks from 17 years, and contracts begun from 1 August 2026 get 1 week for the whole first six months.
The rest of the article, and all 6 questions about Belgium Notice Period Calculator (Préavis), are on the Belgium Notice Period Calculator (Préavis) page.
For a contract that began from 2014, an employer who dismisses a worker with 5 to 6 years of seniority gives 18 weeks of notice, and 21 weeks from 6 years. A worker who resigns after 5 years gives 9 weeks. Blue- and white-collar workers have had the same notice since the single status of 2014.
A worker who resigns never gives more than 13 weeks of notice, reached after 8 years of seniority. Under 3 months the notice is 1 week, then 2, 3, 4, 5 and 6 weeks as seniority grows. For contracts begun from 1 August 2026, the first six months carry 1 week.
Only for contracts that began on or after 1 June 2026: their dismissal notice stops at 52 weeks from 17 years of seniority. Contracts begun before then keep the full table, which the SPF Emploi shows up to 65 weeks at 23 years. Someone hired in 2014 and dismissed in 2032 gets 57 weeks.
Notice given by the employer is suspended during illness, annual holidays, maternity leave, temporary unemployment and several other absences, so it ends later than the dates shown here. Notice given by the worker is never suspended. This calculator shows the dates when nothing suspends the notice.
Rates and rules change; check the source before you rely on a figure.
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