Which insurance is mandatory for temporary workers and students? A guide for employers

As an employer, the law requires you to insure your staff correctly, and that includes temporary workers, flexi-job workers and student workers. But which insurance is actually mandatory, what risks does occupational accident insurance cover, and when does an additional policy become a smart move, or even a contractual requirement?

This practical guide walks you through the insurance you must take out as a minimum under Belgian law, how to protect temporary staff during working hours, and where the biggest misunderstandings arise when insuring students, temp workers and flexi-job workers. We also explain when additional cover such as group insurance becomes relevant, how to handle damage and liability correctly, and what your company needs to do to meet every condition.

The goal is simple: help employers understand mandatory insurance clearly, limit their risks, and insure staff safely and correctly. At the end you'll find a concise summary you can apply straight away within your organisation.

Occupational accident insurance: always mandatory

In Belgium, occupational accident insurance is the only insurance every employer is legally required to hold, even when you work with temporary workers, flexi-job workers or a single student worker. You have to take it out before the employee starts, whatever their status and however short the assignment.

The insurance covers bodily injury when an employee has an accident during working hours or on the way to and from work. That applies to all employees, including student workers, interns and temporary staff. Employers who fail to take out occupational accident insurance risk serious administrative and financial consequences, because every employee must automatically be protected under the occupational accident act.

A proper policy covers medical costs, work incapacity, loss of income and long-term damage. It's up to the employer to make sure the insurance matches the activity, the risks and the type of staff being employed. That way, employees are protected and you avoid liability when an accident happens.

When does cover apply to temps and students?

The same basic rules apply to temporary workers and students as to permanent staff: from the moment someone comes to work for you, you must hold occupational accident insurance that covers their employment. It makes no difference whether it's a student, a flexi-job worker, a temp worker or an employee brought in for just one day, the insurance has to be active before the work begins.

Under the occupational accident act, a temporary worker is treated the same as a regular employee, so the same protection applies. That means damage, medical costs or work incapacity caused by an accident during working hours must automatically be covered. Student workers fall under the same mandatory insurance too, even when they only work a limited number of hours or on a seasonal basis.

Employers also need to check that the worker's status is correctly declared, because this can affect how the policy applies and any exceptions for certain categories, such as interns or flexi-job workers. A correct declaration and a clear employment contract help pin down which risks are covered and under what conditions the insurance steps in. That keeps both employer and employee protected, even during short or occasional employment.

Which additional insurance is worth considering?

Beyond the mandatory cover, a few optional policies can give your staff and your business extra protection. They aren't required by law, but many sectors strongly recommend them because they limit financial risks and help employers absorb unexpected claims.

One option that often comes up is additional civil liability insurance. This type of cover pays for damage an employee causes to third parties or to other people's property during work. In sectors where students, flexi-job workers or temporary workers deal directly with customers or handle equipment, it can make a real difference. After all, the mandatory occupational accident insurance only protects against damage to the employee themselves, not against damage an employee causes.

Some employers also consider a limited group insurance or a supplementary income policy for employees who become temporarily unfit for work. For student workers and flexible staff this isn't always necessary, but companies that regularly bring in long-term temporary profiles sometimes see it as a useful way to spread risk. The key is to work out which additional insurance suits your type of activities, the way you deploy staff and the general risks your company faces.

What else should employers consider?

Besides the mandatory occupational accident insurance, several optional policies are worth weighing up depending on your activities and the risks within your company. It isn't always obvious which cover is legally required and which stays optional, especially when temporary workers or students are involved.

Civil liability insurance can be useful when an employee causes damage during work. It isn't always a legal requirement, but in some situations it is contractually required, for example when you work with certain clients or within specific sectors. In exceptional cases you may also need to take out fire insurance for employees active in particular buildings. This kind of cover protects the employer against situations where they could otherwise be held liable.

There are also optional perks such as a limited group insurance, an extra premium or an expansion of the salary package. These bring tax advantages but remain entirely voluntary. Employers who are unsure can always ask their insurer or social secretariat which insurance makes sense to take out. Sometimes a certificate is requested as proof of cover, for example when a director or temp worker operates on site. That way, you keep every cost under control and make sure your contract is always concluded correctly, without risk.

Key points to remember

• Occupational accident insurance is legally mandatory for every temporary worker or student, and must always be arranged correctly before the work begins.
• The insurance protects both employer and employee in the event of damage or medical costs from occupational accidents.
• Depending on the sector or the assignment, additional or contractually required insurance may apply, such as civil liability or a limited group insurance.
• Optional cover, such as supplementary insurance or tax advantages, can be worthwhile depending on your activities and staff composition.
• Keep certificates and policy documents carefully, so that during inspections or claims you can prove everything is in order.