What Employers Must Check Before Onboarding a Temporary Worker

A temporary worker on your shop floor carries exactly the same legal responsibility as a permanent hire. Before the work starts, you need to confirm that every document, safety obligation and well-being rule is properly in place. Get this right and you avoid legal risks, inspection headaches and potential penalties. This article walks through the employer obligations that legally apply, the checks you can't skip, and what you may and may not do the moment a temporary worker shows up to work.

What must you check before a temp worker starts?

At a minimum, you must confirm the worker is legally allowed to work: identity, residence rights and contractual documents all have to be in order. A temporary worker is checked the same way as anyone else: the employment contract must be drawn up, the work rules must be made available, and the employment must comply with FPS Employment legislation.

You also need to check that the role the worker is assigned to is described correctly, that the pay meets legal standards, and that the arrangements in the work rules apply from the first day. You remain responsible for meeting every legal obligation, even when the worker is only on the job for a few hours or days.

Can you refuse a worker with missing documents?

Yes. You not only may but must refuse a worker when the legal conditions aren't met. Employing someone without proof of identity, residence documents, medical fitness or the required legal certificates is prohibited. If the worker shows up on site anyway without valid documents, you risk penalties or a finding by a social inspector. That can lead to administrative fines or an obligation to correct pay afterwards.

So you cannot let the worker start until every document is fully in order. This isn't a punishment: it's an obligation you have to meet to avoid legal risks.

Which employer duties apply from day one?

Your obligations are clear from the start: a safe workplace, accurate information and compliance with the work rules. Every worker must have access to clear instructions on working hours, breaks, accident procedures and internal rules.

Both you and the worker also need to understand that temporary staff fall under the same rules on well-being at work, and on prevention and protection against workplace risks. That means personal protective equipment (PPE), information about workstation risks and any mandatory training must be available before the worker begins.

Do you need a risk assessment?

Yes. A risk assessment is mandatory, whether the workers are permanent or temporary. You have to identify which risks are present in the workplace, which preventive measures are needed and whether additional training is required. This risk assessment forms the basis for every procedure around safety, supervision and monitoring. If the worker performs higher-risk tasks (for example chemical exposure, forklift use or a hazardous environment), you must check whether specific certificates or medical fitness are required.

If the worker isn't sufficiently prepared, you may not allow them onto the workplace.

Must a temp worker know the work rules?

Yes. The work rules are a legal document that every worker, temporary included, must receive and follow. They set out the rules on working hours, breaks, payroll processing, penalties, accident procedures and internal arrangements.

You need to be able to prove the worker has read and acknowledged these rules, in writing or through digital confirmation. If the worker doesn't know the rules and makes mistakes on the job, it can lead to the penalties set out in the rules and in the company's collective labour agreement (CLA).

Which checks come before site access?

A watertight checking procedure includes at least the following elements:

• Identity and right of residence
• A valid employment contract or signed contracts
• Notification of the work rules
• Instructions on well-being at work and preventive measures
• A check on the required certificates (safety, VCA, medical fitness…)
• Available safety equipment (PPE)
• Knowledge of any workstation procedures
• Accurate information for the worker while carrying out tasks

These checks are essential to avoid problems during employment and to limit risks for employers and workers alike.

What penalties apply if you don't comply?

When you don't meet your legal obligations, penalties can follow, ranging from warnings to administrative or criminal fines. The social inspectorate may carry out checks at any time and record findings when documents are missing or when a worker is employed in breach of the law.

For serious breaches, such as missing contracts or risk assessments, the labour court can be brought in. And if an occupational accident happens and the employer turns out to have been negligent, the consequences can be severe, both financially and legally.

What should you remember?

• Always check the identity and right of residence of temporary workers.
• Make sure there is a valid employment contract and proper knowledge of the work rules.
• You may refuse workers when the legal conditions aren't met.
• Prevention, protection and risk assessment are mandatory, including for temporary employment.
• Penalties can follow from negligence or breaches of legal obligations.
• You remain responsible for safety, rules and procedures in the workplace.