WTTA Legislation: What does it mean for your organization?

The WTTA (Employment Authorization Act) will enter into force on 1 January 2027. What does this new WTTA legislation mean for you? And how do you prepare for this?

In this blog, you'll read:

• What the WTTA legislation means
• Why this law also applies to consulting companies
• What the consequences are for your organization
• How to prepare for this

What is WTTA?

In the temporary employment sector, time registration is extremely important for an accurate invoicing. But does the WTTA change this? The WTTA legislation is intended to prevent abuses when lending staff. But the law goes beyond just employment agencies. Consultancy, secondment and ICT companies also fall under the supervision of someone else.

The key points of the WTTA:

• You need an official permit if you lend a workforce.
• Without permission, you will no longer be allowed to do that from 2028.
• Customers are also only allowed to work with authorized parties.

This law therefore requires action, preparation and clear administration.

Time registration: what is currently required?

Although there is currently a lot of freedom in how you keep track of hours, there are legal frameworks to take into account. Yes, time registration is mandatory — for two main reasons:

1. Working Time Act (ATW)

Employers are obliged to record the working hours and rest periods of employees. The law does not specify exactly how to do this, as long as you can prove it. This provides space, but also requires a system that is reliable and consistent.

2. Invoice requirements under tax legislation

Once you have services invoices, your invoice must meet specific requirements. For example, it should be clear:

• What service was provided and how much (for example: 4 hours of consultancy)
• On what date the service was performed
• What the unit (hour) rate is
• And what the total amount is, excluding VAT

In short: good time registration is not only useful for your internal processes, but also necessary for tax and legal obligations.

WTTA time registration: this is about to change

The standards framework under the WTTA sets additional requirements for how hours are set. These requirements are aimed at verifiability and completeness.

Make sure your time registration includes at least:

• Employee name
• Period or week number of the activities
• Number of hours worked (visible on invoice)
• Start and end times per working day or shift
• Information about any breaks
• Location where work was performed (if applicable)

This information makes it possible to keep your records closed and meet inspection requirements.

Take a critical look at your current way of recording hours. Does it meet the new WTTA requirements? If not, now is the time to make adjustments. You will often also have to discuss this with your client — because under the WTTA, you are jointly responsible for a conclusive registration.

Why does the WTTA also apply to consulting firms?

Many consulting firms believe that the WTTA legislation does not apply to them. However, in practice, it appears that consultants often work exactly in the situations described by the law. For example, within customer teams or under the direct direction of a client.

Practice counts:

• Does your consultant work within a customer team?
• Does he or she follow instructions from the client?

Then there is “provision”. So you have to comply with the WTTA.

Important to know:

• What's in the contract matters less — practice counts.
• Even if you use staff through a third party, you can fall under the law.

📚 Click here to learn more about time registration for consultancy.

Consequences of the WTTA legislation for your organization

The impact of the WTTA legislation for companies is significant. It affects commercial processes as well as internal administration and legal responsibilities.

Customers will soon have stricter requirements

• Many companies will only want to work with agencies that have been admitted.
• No admission = risk of loss of turnover.

Your administration must be in order

• Who works where, when, and under whose direction?
• How long did the deployment take?
• How was the project managed?

You must be able to demonstrate this with:

• Time records
• Project structures
• Chain overviews

Failure to prepare = risk of fines

• Fines can be up to €90,000
• The Labour Inspectorate will enforce from 2028
• Your customer can also be fined if you are not allowed

Preparing for the WTTA

Preparing for WTTA legislation means not only complying with rules, but also reassuring customers and protecting your reputation. Here are concrete steps you can take today.

✅ Check if you fall under the WTTA

• Analyze per assignment whether there is direction/supervision by the customer
• Optionally, have a lawyer take a look

✅ Apply for admission on time

• Do you have an SNA label before June 30, 2027? Then you can make use of the transitional law
• No label? Then you must submit your application in full by 1 July 2027

✅ Make sure you have the right tooling

Use tools like TimeChimp to:

• Time registration per customer and project
• Insight into deployment per employee
• Audit reports
• Chain registration of suppliers and external parties
• Supporting various types of hours (e.g. overtime, allowance hours)

📚 Read more about this automatic time registration.

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What if the law is postponed?

There is talk about a possible delay in the introduction of the WTTA legislation. But the fact that the law has been passed and timeframes have already been communicated limits the risk of delay.

Why you should prepare now:

• The law has been passed by the House of Representatives
• The chance of introduction remains high
• Inspections have limited capacity — waiting times are looming

👉 Running ahead is safer than chasing the facts.

WTTA-proof with TimeChimp

TimeChimp helps consulting firms meet the new requirements of the WTTA legislation. It gives you control over your administration and trust with your customers.

What TimeChimp offers:

• Accurate time registration per customer and project
• Insight into who works, where, when
• Inspection and Audit Reports
• Transparent registration of the entire chain

This way, you are prepared for the WTTA legislation — and you build customer trust.

👉 Ready for future-proof administration? Try TimeChimp free for 14 days.

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