Dutch Work Contracts, Income Tax (Belastingdienst), CAO & UWV Guide for KNM (2026)
Module 4 of the KNM exam tests how employment contracts, collective labor agreements (CAO), income taxes (Belastingdienst), workplace illness rules, and social security benefits (UWV vs. Gemeente) operate in the Netherlands.
UWV vs. Gemeente vs. Belastingdienst: Which Dutch Institution Handles What?
| Dutch Institution | Primary Role Tested on KNM | Key Benefits / Obligations | Who Qualifies? |
|---|---|---|---|
| UWV (Uitvoeringsinstituut Werknemersverzekeringen) | Employee social insurance & job placement (werk.nl) | WW-uitkering (Unemployment), WIA (Long-term disability), WAZO (Maternity leave pay) | Employees who worked prior to losing their job or becoming disabled. |
| Gemeente (Municipality) | Last-resort social safety net & re-integration | Bijstandsuitkering (Social assistance under the Participatiewet) | Residents with no income, no WW entitlement, and low personal savings/assets. |
| Belastingdienst (Tax Administration) | Taxes & income-tested household subsidies | Income tax (Inkomstenbelasting), VAT (BTW), and Toeslagen (Huurtoeslag, Zorgtoeslag, Kinderopvangtoeslag) | All taxpayers, employees, ZZP freelancers, and benefit recipients. |
| Kamer van Koophandel (KvK) | Commercial business registry (Handelsregister) | Issues KvK-nummer and forwards registration to the Belastingdienst for a BTW number | Anyone starting a company or working as a self-employed freelancer (ZZP'er). |
1. Employment Contracts (Arbeidscontract) & Collective Labor Agreements (CAO)
When hired in the Netherlands, you sign an arbeidscontract—either permanent (vast contract / onbepaalde tijd), fixed-term (tijdelijk contract / bepaalde tijd), or via a staffing agency (uitzendbureau). Most industries have a CAO (Collectieve Arbeidsovereenkomst) negotiated between employers and trade unions (vakbonden). Every employee is legally entitled to at least the statutory minimumloon, paid annual vacation days, and a minimum 8% vakantiegeld (holiday allowance, usually paid in May).
2. Payslips (Loonstrook), Bruto vs. Netto & Annual Tax Return (Jaaropgave)
Your monthly payslip (loonstrook) shows your brutoloon (gross salary before deductions). Your employer automatically withholds loonheffing (income tax and national insurance contributions) and transfers your nettoloon (take-home pay) to your bank account. Every January/February, your employer gives you a jaaropgave (annual salary statement), which you use to file your annual tax return (belastingaangifte) with the Belastingdienst before 1 May.
3. Reporting Sick (Ziekmelden) & the Company Doctor (Bedrijfsarts)
If you are too ill to work, you must report sick (ziekmelden) directly to your employer or manager before the workday starts, following company rules. In the Netherlands, your employer is prohibited from asking what medical condition you have—instead, for longer absences, you are invited to speak with an independent company doctor (bedrijfsarts / arbodienst) to create a re-integration plan. During illness, employers must continue paying at least 70% of your salary for up to 2 years.
4. Unemployment (WW-uitkering at UWV) vs. Welfare (Bijstand at Gemeente)
The KNM exam frequently tests where to apply when you lose your income:
- WW-uitkering (Unemployment Benefit): Apply at UWV (
werk.nl) if you were an employee and lost your job involuntarily. - Bijstandsuitkering (Social Assistance): Apply at your Gemeente if you have no job, do not qualify for WW (or your WW has expired), and do not have substantial savings. Both benefits require strict compliance with the sollicitatieplicht (duty to apply for jobs) and inlichtingenplicht (duty to report extra income or cohabitation).
Frequently Asked Questions on the DUO KNM Exam
❓ What is the difference between a WW-uitkering and a Bijstandsuitkering on the KNM exam?
A WW-uitkering is temporary unemployment insurance paid by UWV to former employees who lost their job involuntarily and have built up work history. A Bijstandsuitkering is a last-resort welfare benefit paid by the Gemeente (municipality) to residents who have no income, no WW right, and low personal savings.
❓ Can your Dutch employer fire you because you are sick or pregnant?
No. Under Dutch labor law, there is a strict dismissal ban (ontslagverbod) during the first 2 years of illness and during pregnancy and maternity leave.
❓ Where do you register if you want to start your own business or work as a freelancer (ZZP) in the Netherlands?
You must register your business in the Handelsregister at the Kamer van Koophandel (KvK / Chamber of Commerce), which also registers you with the Belastingdienst for VAT (BTW).
Ready to Practice Official DUO-Style Situational Questions?
Drill all bilingual A2 Dutch + English multiple-choice questions for Module 4: Werk & Inkomen or take a timed 40-question mock exam.