An employer's obligations for student work: what does working as a student worker involve?

Holidays, weekends, a sudden rush of orders. To get through those peaks, many Belgian employers turn to student workers. It's a smart, flexible way to cover temporary busy spells without signing a classic employment contract. But the moment you take one on, specific rules kick in: pay, NSSO (National Social Security Office), hours and the student-work status.

Because student work is strictly governed by law, too. Think of the maximum of 650 hours per year, reduced social security contributions, the student employment contract and the right to the Growth Package (the Flemish child benefit). One slip in the Dimona (immediate employment declaration) or the contract can mean unexpected costs, or a loss of benefits for the student.

This article walks you through exactly what student work involves, step by step, both for employers and for the students who want to earn a little extra on the side. Get it right, and you can bring student workers on board with complete peace of mind, within the correct legal limits.

What is student work, and how does the status work?

Student work is a specific form of employment: a student can work temporarily under a student employment contract, and the upside is that you pay fewer social security contributions. It's ideal for students who want to earn a bit extra alongside their studies and pick up some experience. The status differs from that of an ordinary employee, offering flexibility for the student and a favourable arrangement for the employer.

When do we talk about student work?
A student worker works under an employment contract for students, and as long as they stay within their quota of 650 hours per calendar year, they pay only reduced social security contributions (the so-called solidarity contribution).

What if a student works more than allowed?
As soon as a student worker goes over the quota (for example, beyond the 650 hours), they fall under the normal social security contributions, just like an ordinary employee. This can affect their right to the Growth Package, too.

In short: what is student work?

• Working under a valid student employment contract
• Reduced social security contributions up to 650 hours per year
• Only for students who are genuinely enrolled in education
• Beyond the quota: full NSSO contributions apply

How do NSSO contributions work for student work?

For student work, NSSO contributions are reduced: within the legal quota of 650 hours per calendar year, the student pays a reduced solidarity contribution instead of the ordinary social security contributions. This advantageous status makes student jobs financially attractive for both employer and student.

Reduced solidarity contribution (within the quota)
As long as the student stays within their allotted hours, only a limited solidarity contribution of around 8% is due. Of this, 2.71% is paid by the employee (the student) and 5.42% by the employer. The student builds up no full pension or unemployment rights, but takes home more than under an ordinary employment contract. Employers, meanwhile, benefit from lower wage costs.

Normal NSSO contributions when the quota is exceeded
As soon as a student exceeds their maximum hours, every hour worked is automatically subject to the normal social security contributions, just as for an ordinary employee. Both the student and the employer then pay the full NSSO rate, which can push the total cost up considerably.

Automatic tracking via Dimona
All hours worked are recorded via Dimona, and the NSSO adds them up automatically, so every extra hour is monitored. So track the quota closely to avoid unexpected contributions or a loss of benefits.

What are the pay conditions for student workers?

Sectoral pay rules apply to student work too. A student worker falls under the same Joint Committee (JC) as everyone else in the sector and is entitled to at least the sectoral minimum wage. So employers can never pay below the set salary scale, not even with the reduced social security contributions.

Important to know:

• The minimum wage for a student is set by the Joint Committee (for example, JC 302, hospitality).
• No discount is allowed on the collective labour agreement (CLA) wage, only on the social security contributions.
• Age and status can affect the wage, depending on the sector.

In some sectors, such as hospitality (JC 302), a student's wage may be based on a lower wage category than that of an ordinary employee.
Example: a student who would normally fall into category 5 may, under the sectoral rules, be paid according to category 3.

In addition, many sectors, including JC 302, use youth wage percentages:

• Age 15 → 70% of the scale
• Age 16 → 80%
• Age 17 → 90%
• Age 18 → 100%

Example:
A student in hospitality must receive at least the wage that applies within JC 302, taking into account the correct age percentages and the lower category permitted for students.

What are the Dimona obligations for student work?

Every student worker must be declared in advance via a Dimona declaration, using the specific status STU. This notification to the NSSO is mandatory before work starts and must contain the exact start and end dates of the employment. Without a valid Dimona, the student is not legally employed, and you risk penalties if an inspection follows.

Essential Dimona rules for student work:

• Always use status STU when registering
• Notify in good time before work begins
• Record the start and end dates of the contract correctly

Inspection services check Dimona strictly for student work. A missing or incorrect declaration can lead to fines or the loss of the student-worker status. So timely, correct registration is crucial for valid employment.

Is an employment contract mandatory for a student worker?

Yes. For every student worker, a written student employment contract is mandatory, and it must be drawn up before work starts. This contract proves valid employment and is essential if the labour inspectorate or the FPS Employment carries out an inspection.

A student employment contract must contain at least:

• The identity of the employer and the student worker
• The start date and duration of the contract
• The work schedule or specific terms of employment

The document must stay available at the workplace, or accessible digitally, throughout the entire employment. The social inspectorate can request it at any time. Without an employment contract, the student is treated as an ordinary employee, and normal social security contributions apply.

How do you manage the 650-hour quota?

Student workers may work 650 hours per calendar year at a reduced rate, with reduced social security contributions. This quota applies to all student work in Belgium, regardless of the number of employers. So the employer must record the hours worked correctly via Dimona.

Key points for quota management:

• Reduced rate only within the 650 hours per year
• Dimona declarations record the hours automatically
• Exceeding it = ordinary social security contributions (as for an ordinary employee)

The student shares responsibility, too. Through the online platform Student@work, they can check for themselves how many hours they still have left for the year. Good coordination between student and employer prevents unexpected costs, or a fall-back to the full NSSO rate.

What mistakes do employers often make?

Student work offers flexibility, but the wrong approach quickly leads to extra costs or penalties. Many employers underestimate the administrative side and assume the rules are "less strict" for student workers than for ordinary employees. They aren't. The rules around the student employment contract, Dimona and sectoral salary scales remain fully in force, and are in fact even stricter for students.

Typical mistakes when bringing in student workers:

• Not drawing up a student employment contract before the start
• Using the wrong status (STU) in the Dimona
• Paying wages below the Joint Committee salary scale
• Not entering a Dimona OUT at the end of the employment

These mistakes can lead to NSSO corrections, the loss of the student-worker status and even administrative fines running into thousands of euros. Correct employment always starts with clear contracts, accurate declarations and compliance with sectoral rules.

Frequently asked questions about employing student workers

Do I have to file a Dimona for every student worker?

Yes. A Dimona declaration with the status STU is mandatory for every student job, even for a single day or a few hours. Without a correct Dimona, the employer risks NSSO corrections and the loss of the student status. The Supervision of Social Laws inspectorate checks this strictly.

Can I pay a student less than the sectoral salary scale?

No. Student work falls under the same CLAs and Joint Committees as ordinary employees. A student worker may never be paid below the minimum wage of the salary scale. Meal vouchers and other benefits must also be applied correctly. In some Joint Committees, however, there are separate salary scales for students, which must of course then be followed.

Who tracks the 650-hour quota per calendar year?

The NSSO automatically calculates all hours worked via Dimona. Students can track their remaining quota through Student@work. Employer and student need to coordinate here to avoid going over the quota and becoming liable for the normal social security contributions.

Can a student work as a flexi-jobber?

No. Students work under the student-worker status via a student contract. A flexi-job is only possible for someone who already has a main activity. Combining student work and a flexi-job is not allowed.

Is a student worker entitled to a trial period?

Yes. A student contract can include a trial period, usually limited to three working days. This gives the employer the chance to check whether the student is a good fit, and allows the new employee to get used to the pace of work. For certain forms of part-time education (limited curriculum) or dual learning (work-study), different rules may apply.

Does a student lose their Growth Package if they work?

Not automatically. A student may work and still keep the right to the Growth Package, as long as they meet the conditions. Between the ages of 18 and 25, they must remain enrolled as a student and fall under the main student status.
Exceeding the work hours or earning too much income can, however, have consequences for the Growth Package or their status as a dependant for tax purposes.

Can a student work as a self-employed person?

Yes, a student can work as a self-employed person, but then different rules apply than for student work. They lose the student-worker status and are taxed under the self-employed scheme. There are additional conditions: for example, anyone who wants to do an internship or unpaid work, or to gain practical experience through self-employed activities, often has to meet the rules of their educational institution.

Can a student combine different jobs with the same employer?

Yes, but the performance of the contract must be clearly arranged. Students who work for the same employer can carry out several assignments, as long as the hours are recorded correctly. Extra hours or extensions must always be declared via a new Dimona. If the quota is exceeded, a new calculation of social security contributions follows.

How do you correctly end a student contract?

A student contract does not always end automatically. Anyone who wants to end it before the end date must observe a limited notice period, or end it by mutual agreement. Ending the contract without a proper procedure can lead to disputes or remarks from the Supervision of Social Laws inspectorate. Starting straight away with the same employer after your student job ends requires a new contract.

How does Recruit help with student work?

• Automatic application of the correct Joint Committee and status in Dimona
• Student contracts generated in one click, legally correct
• Processing according to the correct scale wage, with no risk of underpayment
• Automatic calculation of the correct social security contributions

Discover how Recruit manages your student work simply, correctly and error-free.