EOR explained for Belgium: the duties your employer of record takes on

Under an EOR arrangement, the EOR is the employer named in the Belgian contract, and your company is its client. That is how Employer of Record Belgium works: each person you choose becomes our employee under Belgian law and is paid through our payroll. That person spends the working week on your projects, and your finance team settles a single invoice each month instead of a dozen separate payments to Belgian bodies.

That division matters more in Belgium than in most places, because the employer side of a Belgian job is unusually heavy. Social contributions have no ceiling, white-collar pay comes with two extra lump sums every year, and a sector body called a joint committee can set the minimum for salary and bonuses. Whoever signs the contract carries all of that, from the first Dimona notice to the last holiday certificate.

Three groups of duties move across: the official filings, the pay rules, and the workplace obligations that have nothing to do with pay. A fourth group, the decisions about the job itself, stays with you. Each gets its own section below, followed by the cases where an EOR is the wrong answer.

If you would rather follow the calendar, from signed offer to the first salary landing in the employee’s account, the companion guide on the EOR process in Belgium walks through it week by week.

Each start date, each quarter and each departure produces an official filing, and the EOR makes every one in its own name. The National Social Security Office, the ONSS (RSZ), collects both the employer and the employee share of social contributions, so most of the paperwork goes to it. The rest goes to the FPS Finance, which receives the tax withheld from wages.

• Dimona before day one. The electronic notice of employment has to reach the ONSS before the employee does any work at all. A second Dimona closes the record on the last day.
• DmfA each quarter. Pay and working-time data for every worker go to the ONSS by the final day of the month following the quarter. For July to September 2026 that deadline is 31 October 2026.
• Withholding tax each pay run. The précompte professionnel (bedrijfsvoorheffing) comes off gross pay under the official formula and is paid to the FPS Finance as an advance on the employee’s annual income tax.
• Year-end and exit documents. The 281.10 form summarises a year’s pay for the tax return; on leaving, the employee is handed the C4 unemployment form, a holiday certificate and an employment certificate.

The ONSS sets out the Dimona rules on its employer pages. Before any of this happens the EOR also needs its own ONSS employer number, which it already holds, so a new hire does not wait on a fresh registration.

Your part is the raw information: start date, salary, weekly hours, any change in role or pay, and absences you hear about first. Accurate data at the outset is what keeps the DmfA free of corrections, and corrections to a filed quarter are slower than getting it right the first time.

One deduction surprises many employees who are new to Belgium: the special social security contribution (cotisation spéciale de sécurité sociale). It is withheld monthly according to quarterly pay and household situation, and for an individually taxed worker it tops out at €182.82 a quarter, or €731.28 a year. Like the withholding tax, it is a provision, settled when the annual tax assessment arrives. The EOR applies it on every payslip and can explain the line to a new hire who has never seen it before.

A Belgian salary is more than twelve monthly payments, and the EOR budgets, calculates and pays every part of it. Joint committee 200 (PC 200) is the catch-all for office and other white-collar roles when no narrower sector committee applies. Its January 2026 minimum scales for a starter run from €2,242.80 a month in Class A to €2,555.72 in Class D, and PC 200 raised scales and actual salaries alike by 2.21% on 1 January 2026 through automatic indexation.

Around the monthly salary sit three further payments. The end-of-year bonus, or 13th month, equals one monthly salary and is paid by December to staff with six months’ seniority. A PC 200 annual premium, €330.84 in 2026, is paid in June. Double holiday pay (double pécule de vacances), worth 92% of a monthly salary, normally arrives in May or June for anyone with a full reference year behind them.

On ordinary pay the employer then adds 25.00% in ONSS contributions in 2026: a 19.88% basic rate plus 5.12% wage moderation, charged on the whole salary with no ceiling. Double holiday pay is the exception, as it carries no employer contribution. Salaries above €4,000 gross a month face one more change: under the Programme Law of 30 May 2026, indexation on the part above that figure is held back until a 2% moderation has been applied, and for PC 200 the first effect comes with the January 2027 indexation. The employer then owes a temporary contribution to the ONSS linked to the saving, which the EOR calculates and pays.

Our 2026 worked example puts figures on all this. A single employee living in Brussels, on €4,500 a month under PC 200, earns about €62,970 gross over the year once the bonuses are included. On the employer side that adds up to roughly €78,400 a year, excluding our fee, while about €38,100 reaches the employee net. We bill our fee apart from those costs, from €599 per employee per month, and what that covers is itemised on our pricing page.

Several Belgian employer obligations have nothing to do with the monthly payroll run, and they pass to the EOR as well. Work regulations (règlement de travail / arbeidsreglement) are compulsory for every employer, however small, under the Law of 8 April 1965. The document sets out working hours, how pay is calculated, notice rules, sanctions, and where to find first aid and the inspection services, and each employee receives a copy.

The employer must also carry work-accident insurance and belong to an external prevention service for occupational health. Both are arranged and paid by the legal employer, and both sit inside the employer cost figure quoted above rather than appearing as surprises later.

Absence is the other large area. For the first month of illness (30 days at 100%), the employer pays full salary to white-collar staff hired indefinitely, or for a fixed term of at least three months, after which the sickness insurance fund takes over. Since 1 January 2026, an illness that starts within eight weeks of returning to work counts as a continuation of the earlier one, so no fresh 30-day period begins.

Annual leave runs to 20 days in a five-day week, based on work performed in the previous calendar year, which means a first-year employee may not have the full entitlement yet. Belgium also has ten public holidays. When one lands on a Saturday or Sunday, the employer must give a replacement day, and the replacement days for 2027 have to be posted before 15 December 2026. In 2027, 15 August falls on a Sunday, so at least one replacement day is already certain.

You keep the decisions that shape the job: who to hire, what the role covers, the salary you are prepared to pay and the work the person does for your business. The EOR checks that salary against the relevant joint committee scale and builds the contract around it, so an offer below the sector minimum is caught before it is signed.

You also decide on the extras Belgian law leaves optional. Meal vouchers are a common one, free of tax and ONSS when the employer pays no more than €8.91 per voucher and the employee at least €1.09. Telework support is another. For staff who work from home structurally, at least one day a week, a home-office allowance capped at €164.21 a month is exempt from tax and ONSS from 1 September 2026, with up to €20 a month more for a private internet connection and €20 for a private computer.

When a working relationship needs to end, you raise it with the EOR, and the EOR applies the Belgian notice rules as employer. Contracts that begin on or after 1 August 2026 carry a one-week notice period during the first six months of service. Beyond six months’ service, collective agreement 109 lets the employee ask in writing for the concrete reasons for dismissal, and a dismissal a court finds manifestly unreasonable costs between 3 and 17 weeks’ pay.

Those rules are the reason it pays to talk to the EOR early, before a conversation with the employee, rather than after a decision has been announced.

Hiring one person in Belgium, or a handful, without first building a company there is the case the model is designed for. It fits less well in three situations, and an honest provider says so before the contract stage rather than after.

The first is immigration. For a non-EU national, the single permit (permis unique / gecombineerde vergunning) is applied for by the Belgian legal employer; the region where the work is done decides on the work authorisation and the Immigration Office decides on residence. No provider can promise the result, and in Flanders the EU Blue Card requires a Belgian employer and a contract that is open-ended or runs for at least six months.

The second is scale. Once a Belgian team grows, or once you start invoicing Belgian customers yourself, forming your own SRL (BV in Dutch) may make more sense, and our side-by-side look at EOR or SRL in Belgium weighs the two. The third is a company that would rather register with the ONSS itself as a foreign employer and run payroll through a social secretariat. That route exists, but it needs tax advice on withholding and on whether the activity creates a permanent establishment.

If you are comparing providers for the cases where an EOR does fit, our guide to choosing an EOR in Belgium lists the questions that tend to separate them.